i'd figure tankies by strictest definition to be garden variety MLs, though yeah this typically includes support for mao.
my experience of trots has been old trade union guys trying to hawk papers/do book clubs linking everything somehow to permanent revolution, with a side of turning up to pickets. idk if i'd call them fanatical, they tend to spend too much time bickering about organisation amongst themselves. definitely agree with the weirdly nostalgic part though
After the last incident with a pre-print claiming rt superconductivity I'd be wary too, but reading through the supplementary info the method seems like plenty of labs could quickly shit-test the data.
The team in question seems to have already published a write-up of their work with this material