Even though you are unwilling to provide details, I am considering the possibility that you are referring to my reply to you here. My understanding of the whole thing is the following: you were pinging Tom Breloff (who is, AFAIK, not a current maintainer of Plots.jl) about his plans for the package; in a topic that was about a very vague claim about the asthetics of Plots.jl plots.
I maintain that mentioning people with the @ feature should be used sparingly, and overusing it is rude. I understand that we all want to get replies to our questions, want them quick, and ideally from the people who know most about a topic. However, it is important to understand that people participate in this forum in their free time, and may prefer to do so in a time-constrained manner, or not at all for a while. Overusing the @ feature to compete for their attention may drive them away from this forum.
Also, specifically, I think that Plots.jl maintainers have been getting a lot of flak lately. I think I did the correct thing when I asked the OP of that topic to provide an MWE and/or open an issue. I think that pinging an ex-maintainer on an unrelated issue in that topic was not helpful in any way.
Finally, if I am indeed the person you are referring to, if would prefer to be told about it, instead of having to guess from vague references like above (especially in a context where words like “censorship” and “dictator” come up). I absolutely do not mind open discussion about these things (in fact, the opposite), and I think that giving references to actual comments you consider out of line is the healthiest way to solve the issue.