>>1676722>they're usually bentkek what
the good bottle cages for any non-roadie are the metal ones precicely because they can be bent so you can fit a kingfisher strong can or a 1.5l coke or whatever in there.
The 1 difference between cheap ones and others is that the cheap ones are a bit more prone to break at the weld. But even then it typically takes ages, and is something that happens to all bottle cages.