starting to wonder if all the stuff about the incompatibility of strength and endurance work isnt just more bro science
I think it's true that neither helps you to reach your potential in the other, but whether that really matters depends on what else you've already optimised in terms of diet and training and what you're trying to achieve. If you're my friend, who won a 3 race series by 1 minute (so 1 minute over 12 hrs of running made the difference betwen 1st and 2nd), then you probably don't want to take up Crossfit. If you're me, and the difference between dragging vanity biceps round a 50k course is the difference betwen being 11th and (say) 7th, then it's not really worth dropping the strength training for the sake of being a slightly better "also-ran".
I also think that for most people, in terms of how much it enhances performance, quitting weights probably falls below several other factors in terms of impact like stop boozing, stop eating crap, get enough sleep, and stay hydrated (possibly that's just me....).... oh yeah, stop falling over might help too- 3 wipe outs yesterday and one was on tarmac (the shame).
So I think this advice is all true, but at the margins. What we really need is an "advice pyramid" with the lowest hanging fruit at the bottom (put on trainers, go outside) and the most marginal extreme stuff at the top (move to Nepalese village at minimum of 6000 ft).
Re veterans category, what you tend to find on trail is that some veterans are very good (the women's winner is nearly always a 40+ here) BUT if you look at the overall field, the non-veterans do much better. Possibly then it's a case of the naturally gifted peaking late, but for the average runner, youth is still an advantage. How the prizes work is that the women in the 40+ category qualify for the open automatically, so if the overall woman winner is 40+ then she wins the open and also gets the veteran's prize.Anyway, I'm a veteran soon, so I'm all for it- it's my chance to win a real plastic gold cup.