I disagree, I think they are too lenient. The amount you can cut and push wide in some areas without a penalty is ridiculous - has made me drive the hotlap challenges in an unrealistic way that I don't really enjoy. For example: https://www.youtube.com/watch?v=GQ1NdigTAVo - the lap should've been invalid at 1:16, 1:17, 1:36, 1:41, 1:44 and arguably a couple of other places too.
Yes I have to agree take the Bugatti track as a example people are missing out and cutting corners for fun. In a race situation running slightly wide and getting your time invalidated ain't going to harm you, in qualifying the pole lap should always be as clean as possible. There are a few tracks that it is slightly strict on certain bends as I've had 3 wheels on tracks 1 touching grass and got invalidated lap, but I'd rather it was much stricter overaul, another bad example is monza people can basically miss out 2nd chicane, hockenheim people cut 1st bend then run wide so they don't brake, so many examples can be found where it is far from strict.