jgrahamc's comment that I replied to is a mild example of this. If people are repeatedly raising the same concerns whenever HTTP/2 is discussed, then there are clearly issues with it that aren't being sufficiently dealt with. Writing off their problems as merely being "all the same old arguments", and discouraging discussion of them, doesn't exactly help solve these problems.
Things tend to be particularly bad when it comes to systemd, though. It isn't unusual to see censorship occur, either in the form of unjustifiable downmodding, comment deletion, or even the banning of participants, depending on the venue. We also are seeing it become increasingly difficult for Debian users, for example, to opt out of using systemd, or to easily switch to an alternative init system.
Instead of people with different preferences or interests working together, or even working independently, we're more often seeing one group of people quench the ability of the competing groups to participate or to even have choice. When discussion is stifled, and choice is taken away, the outcome will likely never be positive.
