Fwiw, if by 'pointless' we mean 'is eclipsed by a better option', then that definition fits a whole lot of things. A rifle in .45-70 will run anywhere from 1200 to 3000 ft/lbs of energy, depending on whose ammo you're putting in it. While that's impressive, from a strict definition standpoint, it's still 'made pointless' by a similar-size gun in .454 Casull, which will run from 250 ft/lbs up to right at 3,000 ft/lbs. (I got over 2900 ft/lbs with some factory ammo from my 20" .454 carbine when I had one). They're both launching .45-caliber bullets, at roughly equivalent top-end power; but the .454 also gives you the option of more versatility at the lower end of the power spectrum, going down into ranges that the .45-70 wouldn't make sense for. Things like rabbit hunting with light .45Colt loads, etc. Plus there's the facts of lighter & more space-efficient ammunition (being able to fit twice as much .454/.45LC in the same space compared to .45-70).
Thing is, I don't have or want a .454 or .45-70 rifle either one. So I personally have no dog in this fight; just rambling on the realities of different calibers.
The same "eclipsed by a better option" principle holds true for any number of calibers. My main carry caliber is 9mm, but fact is, the 22TCM exceeds 9mm performance, and does it in 9mm-size guns, with less-than-9mm recoil. So if we're speaking strictly functionally, the 22TCM has objectively "made the 9mm pointless". But I'm still sticking with the 9mm; ymmv.
That said, the above comment isn't a slam on the 9x19 caliber either. The 9x21 caliber that irrationally gets praised here on occasion has absolutely been "made pointless" for anyone in the US, since the plain-jane 9mm is more capable, more powerful, more plentiful, and more affordable. Yet some people still find reason to praise it. Or maybe better said, "some people imagine and fabricate reasons to praise it".
And for that matter, even though the .223 is my main defensive-carbine caliber, is by far the most-used centerfire rifle caliber I own, and has been used by me from everything from plinking, to training, to actual military use, to taking whitetail deer, it has undeniably been "eclipsed by a better option" nowadays as well, by at least one caliber, and likely more than one. Functionally speaking, other than shoot rimfire stuff, the .300BK does absolutely everything the .223/556 does, does numerous things the .223 doesn't, and even fits in the same magazines. And with the new Sig Spear announcement by the military, even the largely-strawman "GI round" argument starts to become a non-issue as well. Just sayin'...