Sure, also with McDonalds there is that effect from many people eating there. But they also have a low value reputation pulling in the other direction. Some feel ashamed and don't want anyone to see them eating there. Others feel the need to make up excuses to eat there, thinking McDonalds becomes more socially acceptable if you have a good excuse.

It's kind of like mining in the biggest pool. A lot of people are doing it so you assume it's the best (?), but on the other hand you know the pool is getting too big and reducing the security of bitcoin. So then you make up an excuse, maybe something like "I don't understand this bitcoin stuff, I just run this machine and money comes out." Or maybe you make up a new user name so noone knows it's you, and you tell all your friends that you mine at a different pool.