A meh position isn't by default the most rational. A huge change in how the API perform will break the experience for a big parcel of power users, power users are usually what whole platforms are built on top of. Twitter's usage is powered by the minority of a few power users who actually post something interesting in the platform, the same is true for Reddit.

You being a consumer satisfied with a subpar experience is not the rational position, it's exactly the "meh" position you mention so it doesn't really lend to much discussion. You won't be that affected, so you probably wouldn't be that affected if Reddit completely disappeared.

Calling people being affected by some massive change to their experience "histrionic" is both being condescending as well as completely not understanding how much it can affect others...

Yes, it's a minority portion of users, but an important minority who engage with Reddit in a very different way than you do :)