WR Tet McMillan as the Saints pick at #9?

Snakehead said
4.5 guy is essentially the average speed so they aren't really in the other group.

Tetairoa is somewhere in the 4.5 range

Snakehead said
Nearly all of the top guys now are sub 4.5 and even sub 4.45.

He is bigger so expecting a blazing speed wasn't going to happen.

If he's a 4.57 guy, then comps we'll to Tee Higgins.

Tee Higgins 6'4" 219lbs 4.59
T-Mac 6'4" 219lbs 4.53-4.57

I don't like T-Mac's T-Rex arms, but he does have 10" hands so that's great.

I like a lot of things about T-Mac.

The point is there are plenty of recent examples of top tier WR’s that ran 4.5 or slower. None of what you said changes that. You even included another example in Tee Higgins to prove my point even further.