Good Cam Choice?

Bewy said under some arbitrary lift number a 30 degree seat is better.

It’s not. It’s never been a good option. The amount of lift you are using does not dictate what the valve job should be.
That is a more reasonable statement, although it would be more accurate to say that lift ALONE does not dictate the valve job.

The previous statement that lift has NOTHING to do with the valve job is not accurate.