You always see all these shots of folk galavanting around with lovely set up bikes, but rarely do you see mention of the drawbacks
That's my gripe with a lot of videos - a lot of the time there is a monetary aspect as a motivation - or a hope of one and that can influence objectivity. Anyone hoping for a freebie from company X is perhaps less likely to slag them off.
The other thing is that a lot of this gear is new and, relatively speaking, untested.
I bought a set of Ortlieb backrollers - a design (and material) tested over decades and put them on a Tubus rack. It's no surprise that both are still going strong after a few adventures, the only significant Ortlieb issue coming from a dogbite

On the other hand, my second set of Ortliebs utilises a "newer" material and I don't rate them at all.
I do wonder about the cost, and by cost I suppose I mean longevity beyond the initial price.
I'm boringly on record here popping into the odd "what bike" thread urging the consideration of component cost in evaluating bikes.
Ditto with a lot of the Bikepacking gear. For a start, shorter folk are at a disadvantage in terms of choice, a lot of it seems very specific to design so changing bike could be problematic. And then there's the wear and tear. A drybag worn through by contact is no longer a drybag.
To go back to my Ortliebs, they have been on three different bikes on two different racks, can go front or back and even on a trailer.
Flexibility and longevity are not topics I normally see discussed.
That's not to say that one way is superior to another, just that people should be aware of what they are gaining and losing with each choice they make.
I've actually gone for the low fi solution of some plumbers insulation taped around the tube

A lovely bike and you do that to it!
The BikePacking Gods will be punishing you!

There are some interesting ideas coming through though, to solve problems that are thrown up by opting to tour bikepacking style, many of which, folk may not be aware of until they dip their toes into it.
The last few words are so important.
The most important thing is to get out and try it. see what works, what doesn't, find where our tolerances are.
You've a hole in your drybag - but look at where you've been, done and with whom!