That is indeed quite generous of @eroche :-)
I agree that tags fulfil an important role on the platform. Some time ago I actually asked myself the question whether 5 tags isn't a bit too much. I think if we would only be able to use 3 tags, it forces you to really think well about them. It also would point out clearer winners (cryptocurrencies vs crypto for instance). Also, you could say it would make the tags more accurate.
Generally a piece of content has a certain focus on probably 1 or 2 subjects. By giving everyone the opportunity to pick 5 tags, usually the last few are related but less relevant or just used for visibility purposes.
What do you think @liotap?