You can have stuff like plate subduction at the same time as the plates themselves have a stratified structure to them. Those things do not contradict one another. They may seem to in the mind of a non-geologist, but unless you imagine every non-creationist geologist is in on the conspiracy, you can go ask one and he or she will tell you what I've said is true.
As to your question, it depends; is he right?
If I were to tell you about a fabulous business opportunity I learned of from a Nigerian prince who has offered me a generous cut of his 3 million dollar fortune, if I post a money transfer fee of $10,000 to help him move his fortune out of the country, would you think "Wow, there's a chance this Nigerian prince is for real"?
Let's change the details around. After all the 409 scam is very old and has worn many masks over the years. This is so that people who have been warned specifically about the "Nigerian prince" email will not recognize it.
What if it's instead a Dutch dignitary? What if it's land and other assets that he needs to transfer to somebody else's name to avoid seizure? I've even seen a version where it's a stranded astronaut trying to crowdfund a rescue mission.
Once you learn to recognize the structure of a 409 scam, the general anatomy of it (so and so is in a bind, large amount of wealth on offer, needs comparatively small amount from you to 'unlock' it) you will recognize it every time no matter how the details change.
I'm certain the moment you started reading this, you thought "straw man". Never mind that analogies are by definition never an apples to apples comparison. But the parallel here is that it is possible to identify a scam by the anatomy of it. How it is designed to act upon the intended audience, psychologically.
For example, supposing I instead tell you that the world is ending soon. There is no point to continuing your life as it is, since death is imminent. The only way out is to worship me as the greatest person ever to exist.
If you do that for your entire life, and go to your grave still loving me, then I promise I will take you to a fantastical paradise with everything your heart desires, including all your deceased loved ones. When you ask me for proof, I say it is impossible for me to prove it to you because it's after you die.
I then tell you that if you don't worship me, or if you stop at any point and go to your grave not loving me, then you will instead be sent to a horrible torture pit that's scarier and more painful than you can imagine, for all eternity. When you ask for proof I give you the same answer I did before, that it's after you die, so I can't prove to you it exists, you just have to trust me.
This is the carrot and stick approach, isn't it? A bribe and a threat. Good cop/bad cop. Incentive and deterrent.
I then tell you that if anybody comes to you and says I am a fraud, they are sent by an invisible trickster character who is responsible for everything you see and hear that is contrary to my claims. His sole aim is to lead you astray from worshiping me by causing you to doubt that what I have told you is true.
If you sincerely believed all of this, wouldn't it motivate you to spread it? Desiring that your loved ones all go with you to the paradise I have promised to those who worship me, and not to the horrible pit of torture?
Out of the goodness of your heart, would you not attempt to persuade even strangers to worship me as well, for the same reason? To save them from an eternity of torture? It's urgent to persuade as many as possible too, since the end is so near.
Because both the paradise and torture pit I have described are infinite in duration, it results in an infinitely strong psychological pressure to believe, to avoid doubt, to convince others to join and so on. Because what is a little suffering in this life compared to eternity?
What does any of this matter compared to the prospect of either eternal pleasure, or suffering? It's sufficiently strong pressure to even turn people against their own families, should they not convert. It's enough to make people do many terrible things they otherwise would not, which benefits the propagation and survival of the religion at the expense of humans.
There's more to how it works than that, but this is a rough outline. Can you see that this is how Mormonism operates? And how Islam operates? If so, can you then turn that perspective back onto Christianity?