Earlier quoted context omitted.
What bad things are culturally accepted in PHP?
Most common thing that seems to come out is using string concat for sql queries.
You and yours really need to read up on what you hate so much so you don't look like a bunch of fools arguing about things that don't exist.
That said: There are many projects still using crap like that, but that is because of bad programmers. This stuff is deprecated in core and its use is heavily discouraged.