While I largely agree with the first part of the sentence, the second doesn't necessarily follow. As I wrote, I don't love the boilerplate TM. But it will and has worked for a lot of people in this demographic. So have lots of other programs, sure, and they should all be evaluated on their merits and suitability to the circumstances of that particular person.
I think people forget that TM is a template as much as it is a program. It can be tweaked, just like anything else. It's a dead simple program and I've made pretty respectable gains on it. In one year on the program, I went from being the lowest finisher in my weight-class in an uncompetitive meet to mid-high pack in a competitive meet.
I'm also not an ideal candidate... I'm old(er!), have wife, kids, stress, work, get sleep as I can get it, don't count my calories and so on. As with anything else, you get out what you put in. BUT, with this program you do have to put in and you do have to be religious about your training. The next week builds upon this one and this one built upon the last one.
One of my friends runs a DUP program (and also lifts much more than I do), but he trains 6-days per week (no kids). I asked him to make a DUP program based on the 3-days per week I'm able to train and there's so much volume, no way I'm out in less than 2-2.5 hours. With TM I dedicate no more than 1-1.5 hrs/day. It's a tradeoff I have to make, maybe others don't. So yeah, even though my bench has stalled on TM, I've just changed that portion of the template and seeing where it takes me.
My point with all of this; just like anything else, you get what you put in. If you can run a 4-day split, you'll be better off. If you have more time to devote to the sport, you'll be better off. You can rest longer, do back-off sets or other volume work and so on. You can even tweak your intensity day to a higher intensity single with some lighter sets across for additional volume/stimulus. Millions of ways to skin that cat. This isn't rocket science or brain surgery
This you? I dunno, you could probably eat moar and squat moar than 285 before switching to intermediate, pretty sure that's the standard response.
I think Texas Method was great for a while. I think if a guy is eating and sleeping it can be treated like an LP, do it for a time limit (4-6 months maybe?) and go from there.
For DUP, try to absorb everything you can from Zourdos. For block periodization, you're gonna want Bompa and Issurin.
OK, I've got Block Periodization by Issurin and Periodization-5th Edition by Bompa on order.
The only resources from Zourdos that I've been able to find are his research paper and a slide deck. I've read both, but they were too general for me. I understand DUP at a 50,000ft level, but not how to translate the principles into specific sets and rep ranges over a longer training cycle. I'm assuming the extra details that I need are in the books that you mentioned.
If you wrote a DUP e-book I bet it would sell very well. There are a few people who are constantly promoting DUP, but no one ever gets into exactly how to apply it in practice.
Just to interject again, I'd kinda like to see what the roundtable discussion is of doing Texas Method immediately after SS advanced novice. At least for the squat. I think if your squat is between 300 and 400, and you're an average male, the 5x5s won't fail to produce results and the weekly peak on intensity day is good for both muscle/tendon/bone density and mentally handling the stress of heavy weights.