I've done quite a bit of reading on Brooks and I can't say I agree with you, especially regarding the measurements worry or the implied yards after contact worry (your words "doesn't get a push, not a finisher". While I do wish he was 216 and not 207, I don't see that as a major concern, because his frame can easily add some weight. It's not like he's 190 lbs. I'm not impressed with the "gets stood up and dragged back a lot" concern. Nor the "doesn't make use of the free hand enough" concern. There's going to have to be more serious concerns than that. In April of 2023 before last season, Brooks ranked first in average yards after contact (5.07) and third in yards per carry (6.6) among Big 12 running backs with at least 30 rushing attempts last season. Across 51 career carries, Brooks has averaged 6.7 yards per attempt and 4.94 yards after contact with six scores.. As for yards after contact in 2023, He ranked ninth with 3.91 yards after contact per carry and seventh with 64 missed tackles among 47 FBS-level running backs in this draft class. Against Kansas he had 111 yards after contact and 6 missed tackles forced. It doesn't sound like your statement "not a finisher, not a tackle breaker" has any merit, unless you know something I don't.
I watched Brooks vs Alabama, Oklahoma & the game you referenced, Kansas St. Some areas he impressed, some he did not. Is there content contrary to the player I saw? Of course, which isn't unusual. Below are at least four sources I would think you're familiar with, all of which mention the same concern I did. The url at the bottom is the play he got hurt on. Important to note, each of those sources say a lot of good things about Brooks. My yac comment was in reference to the players I had mentioned. Stats, we know about them, right? Define contact? That which I saw Brooks come through I just didn't happen to find impressive. Not to suggest my opinion is correct.
Versus TCU Brooks was having himself a game. Then, he's about to rip another big chunk but he's subjected to a torpedo, a real tackle! He sees it but misjudges it about as poorly as he could. It appears he attempts to use his free hand but he's way high, it's ineffective, doesn't land at all. Great ball skills but in other areas doesn't make full use of his hands. With the combine he's since listed at 216. Is that honker weight, because if it is he's obviously bought into a weight & conditioning program that's going to help best prepare his body. At fantasypros he's ranked 180 (.5ppr), the WRs in this class are getting far more respect.
"... has good burst but can be a little hesitant to punch the gas between the tackles until he sees clear points of entry, and he isn't a physical run finisher. ... Power into and through contact is just average." - NFL.com draft tracker profile
" ... might not be an “every down back”, but teams that incorporate backs into their passing attack and make use of personnel, alignment, and motion to create space could unleash his skillset to great effect. ... Teams looking for a bigger “power” back will likely look elsewhere. ... Some teams will have concerns regarding Brooks beyond the medical issues. He has a relatively slight build for an NFL running back, and more closely resembles a slot receiver..." - Chris Pflum, (bigblueview.com & used to also cover the Giants for SI)
"Can stand to add more functional mass & strength... often brought down on first contact... Isn't a powerful runner who breaks tackles routinely." - steelersdepot.com
"Below-average balance and power. ... struggles to run through contact at the line of scrimmage, and he regularly goes down on first contact at the second level. He rarely pushes piles or finds extra yards." - bleacherreport.com
The play on which he was injured:
https://www.youtube.com/watch?v=FgGrnLxYQZs