Look, there's one aspect of this article which is right. Trent is so into his program and how he wants to run it, that maybe it appears he's "low-key" or "less salesy". Maybe he's misunderstood, or at least, it's hard to connect to him. But, in the end, there's some interesting perspective in the article. Here's a proven program builder from the West coast, who had a program to re-build. In that time, he's had to reach out to former players, fix a APR issue, recruit and build relationships with high school and AAU coaches in the region, and build a staff. Yes, it's taken him a while to do it, maybe longer than most expected. But, LSU basketball is not going to "fix" itself over night, and it's certainly not going to do it faster just if you bring in another head from afar. There's still going to need to be all of the elements pulling in the same direction... the AD, LSU community, former players, recruits, etc. We are making progress, everyone on the outside seems to be getting it, but those that are closest to home don't.
I don't think Collis Temple is as influential as he thinks . . . not with Alleva anyway. AD's don't generally want any "kingmakers" involved with coaching hires and fires.
On his own I agree he wouldn't be a huge factor. And if Trent demonstrates significant improvement in the near term, it's a moot point anyway. However, if the program gets stalled and fan support (i.e., ticket sales) erodes, it won't help Trent to have a figure like Temple joining the chorus of people who want him fired.