Developers really love doing all these forks - but they are a massive nuisance for everyone else. The exchanges, the online wallet providers, the payment processors, all of them have to do a shedload of work to accomodate these changes.
Yeah, just look at the segwit forks to see how bad everyone is at wanting to use new forks. They were just two forks in august but it took many users more than 6 months to even bother to start using segwit.
Developers are going to have to do their best to make things backwards compaitble like is done with bitcoin to ensure everything remains fairly stable and usable for the exchanges. Btc, ltc and doge are pretty good at doing this, if eth starts adding a load of forks and a few other cryptos do the same, exchanges will find it hard to run anything less than a full/pruned node while keeping security but they may have to compromise on a few things (such as fully reviewing code) to ensure their version of the software is compatible with the current fork at the time.