Vented attics are still far better in just about all other areas, as attics otherwise turn into greenhouses if they rid themselves of air as it heats up.
From what I read non-vented attics are more common in the north, but in the south the attics must be vented and you can’t make a vented attic into a non-vented one.
In our area (the south) people try plugging up the vents thinking they’ll save money. Then mold starts growing and they spend a fortune getting rid of it.
Roofers know better; they’re putting in ridge vents all the time now.