So much care and planning has gone into creating the web platform, to ensure that even as new features are added, they’re added in a way that doesn’t break the web for anyone using an older device or browser. Can you say the same for any framework out there? I don’t mean that to be perceived as throwing shade (as the kids say). Building the actual web platform requires a deeper level of commitment to these sorts of things out of necessity.
The platform (meaning using standard features built into browsers) might not have everything you need (it often won't) and using those features will bring long-term resiliency to what you build in a way that a framework may not. The web evolves and very likely won't break things. Frameworks evolve and very likely will break things.
Sorta evokes the story of MooTools and Smooshgate.