I think you are overgeneralising.
Keep in mind that the radical minority is always very vocal, whereas the moderate majority is not.
Some of those who identify as “Traditionalist”, with all the varied trappings and notions that the term encompasses, are indeed mean and angry, and anti-Semitic.
However, you’ll find that there is a silent majority that is not. On this forum we have many people who prefer “Traditionalist” things like the TLM, Latin, etc…who are not toxic.
I place Traditionalist in quotes because I think it a rather self-imposed and self-congratulatory term. A Roman Catholic who attends the Ordinary Form of the Roman Mass and lives his or her life in devout observance of the Church’s teachings is just as traditional as a so-called “Traditionalist”. Also, as an Eastern Catholic myself, I find certain usages of the term, mainly those that imply that “Traditionalist” Roman Catholicism is the normative form of Christianity, to be offensive and inaccurate.
Keep in mind that the internet attracts extreme personalities that may not have found an audience (or have chased away the audience) in real life. Don’t pay them much mind. You enjoy old Latin devotions? Good! Pray them, but don’t get sucked into the toxic, cult-like mentality that you’ve noticed.
God bless.