These are people who did a great community conference for local people (Chaincamp), but then they discovered that bitcoin maximalism can be a really good business, and that they can make a lot of money from it. Just put "bitcoin-only" on it and people will go for it.
So they came to Prague, rented a hall in the fields on the outskirts of Prague, and started selling booths and doing business from the community on a large scale.
This fight against being associated with other blockchains is just theater - ideological branding to protect the business model.