i've always presumed that they were trying to persuade out of the same ignorance that makes most new lemmings unware that lemmy started off as a leftist safe space that still sustains highly active leftist core groups despite an overwhelming large influx of moderates from reddit's & twitter's enshitification.

i also presumed that, that same ignorance makes them unaware there are already several rightist lemmy instances that have been defederated; as you predicted would happen with a conservative-dedicated instance.

however i would have guessed that these conservative communities found the right instances to make a home in .world, .ee and .works since my experience with the users from those instances mirrors american politics; where it's only major "left wing" party (aka the democrats) are right-of-center when compared to a large majority of the western world.