I’m not a professional dealer by any means but I have dealt thousands of hands of poker.Put in an 8 (or 10) hour shift dealing poker sized cards. Repeat for 40 hour weeks.
Do that again with bridge sized cards.
After your first shift, you’ll know why poker rooms use bridge sized cards.
As a side note, I wonder if the people stating the poker size preference hold the stub correctly? Fingers curled at the end of the deck, and index finger covering the top of the deck, so as not to flash anything? Also using a correct pitch, without turning the wrist?
And the amount of people saying “I use poker size cards because I play poker not bridge” amazes me. To the extent that I wonder if they are also using official casino weight chips.
Stud, draw and hold em variances.
There’s no doubt in my mind that the smaller bridge cards being used in casinos by professional dealers probably does make it easier on them after 40 hours.
Not being used to dealing bridge size cards makes handling them awkward to me.
At the end of a session, the size of the card in play has much less importance to me verses the size of my chip stack.
Just prefer poker size because it’s what I’m used to.