Kind of.
Basically, lets say stella's 45 votes right now are worth 62.55 like you say. If she is voting at 100%, that 62.55 is probably the max possible value her votes could have before the fork..
After the fork, he the max daily value of her votes will be somewhere between $7.81 and $62.55. Both of these extremes are very unlikely. In reality, it will probably be somewhere close to in the middle of these two values.
WHich is to say, stella, and every very active curator, will most certainly lose some influence. How much influence depends on how many @someotherwhales there are who have been casting 5 votes a day and will now be "optimized" by the change in vote target