Well, it's not just about polish. In the case of Matrix, a simple look at their "feature matrix" shows that the only client that seems to be making any appreciable effort at all to keep up with the feature sets that are touted as selling points of the protocol (encryption, modern UI, "Discord-like" experience) is the bloated Electron monstrosity, and independently I have heard from multiple sources that the Matrix server software is so heavy that it struggles to support even a three-digit number of clients on commodity hardware.
This tendency to render your project unusable by choosing inappropriate development tools (perhaps for their seeming friendliness towards inexperienced developer - maybe if the same developers were forced to write in C their code would simply crash all the time, whereas as it is it "merely" runs slowly and/or leaks memory) is manifestly not an intrinsic feature of open source. If anything, in the old days, open source projects (such as Linux itself) stood out for being more lightweight and performant than their commercial counterparts. In fact, I think the first time I remember encountering an open source project that was rendered unusable by its bloat was with Diaspora (an early attempt to make a federated Facebook/Google+ replacement, written using Ruby on Rails). Perhaps there is something to the fashionable "fix social media" sector that necessitates making development inclusive to those who are more activists than engineers, even if this comes at the cost of sound engineering decisions.
This tendency to render your project unusable by choosing inappropriate development tools (perhaps for their seeming friendliness towards inexperienced developer - maybe if the same developers were forced to write in C their code would simply crash all the time, whereas as it is it "merely" runs slowly and/or leaks memory) is manifestly not an intrinsic feature of open source. If anything, in the old days, open source projects (such as Linux itself) stood out for being more lightweight and performant than their commercial counterparts. In fact, I think the first time I remember encountering an open source project that was rendered unusable by its bloat was with Diaspora (an early attempt to make a federated Facebook/Google+ replacement, written using Ruby on Rails). Perhaps there is something to the fashionable "fix social media" sector that necessitates making development inclusive to those who are more activists than engineers, even if this comes at the cost of sound engineering decisions.