"Screeching" in english (at least North American english) is typically a gendered derogative. You generally wouldn't say a man was "screeching", not unless you also wanted to imply he was effeminate.
By avoiding the word, you avoid insinuating the target's gender is part of the issue, and/or avoid insinuating that the target is effeminate when they "should not" be, i.e. you avoid homophobia.
By avoiding the word, you avoid insinuating the target's gender is part of the issue, and/or avoid insinuating that the target is effeminate when they "should not" be, i.e. you avoid homophobia.