What does 都是套路 mean?
Literally, "it's all routine", which is now used online to mean "act according to scripts, not from heart". That is, you mindlessly follow what a book or someone else tells you to do, step by step, without any thinking from yourself.

I believe it originated from the routines to date girls. (I made this up) 1. get her out, 2. pick a restaurant that is quiet and posh, 3. "carelessly" drop something on the ground so you can touch her hand, etc, which eventually leads to get her to bed. So guys follow this routine mindlessly and girls recognise his behaviour "is all routine (to get me to bed)", not to start a serious relation.