Interesting link, thanks.
Ok it’s rigid and that comes with different issues, but riding a Jones F+F makes me realise how flexy even a good / stiff MTB telescopic fork with 100mm hub wheel actually is, mainly under braking, also on off-cambers or those wonky landings. Whether sus forks need to be any stiffer on an MTB is debatable though. Under braking, yes, it’d be good (anti-dive would be more interesting) but at the speeds where it would count I expect you’d be on stiffer, longer dual-crown forks and brake dive / weight shift is more of an issue than fork flex.
Dunno about heavier motorbikes, but for MTBs the telescopic seems to be the best compromise. But I’d like to see a few more rake options, as we have on 29er forks now – to balance weight distribution and trail better. Would be interesting to ride a slack 150mm forked FS bike with nearer 50mm rake.