"Does he still call V2+10?"

Still required on the -9

The phenomenon is not all unusual, and not exclusively senior/old or junior/new.

Lots of folks still doing "whatever" this way or thst because that is "what they (some SimP anxious to get home early...) told me" one or nine or nineteen years ago - regardless of what the book actually said then or says now - or any consideration for technique or learning or flexibility or common sense or the current conditins or anything else.

Yes, follow the procedures.

And fly smart.

It is possible to do both.