Tell me if I'm mistaken (I'm sure someone will ), but I don't think expressing concern about giving a new vaccine to children who are not highly at risk from the disease it is to help with and whose long term effects cannoy be known for quite some years, is "inflammatory language".
There was a discussion a while ago on GN about whether one would let one's kids be part of a study that wanted to test the efficacy of already well understood and used vaccines but in combination rather than individually. Quite a number of GN-ers, possibly the majority but I'm not sure about that without seeing the thread again, said absolutely not. Yet here was a much safer proposition as far as knowledge of insidious effects was concerned.
As it happens one of my daughters, as a baby, did take part in such a trial. It was to test the take-up of the meningitis vaccine when it was delivered alongside others. The Men-C vaccine itself was already thoroughly tested as to side effects, as were the others it was to be given with concurrently.
As I hear it, NO's argument and vehemence about his own kids not having a covid vaccine is not because he's an anti-vaxxer but because of the unknowns about the long-term effects on children. I get that. I don't know how I would feel about it if I still had kids. It's quite different from the scenario described above.
Also, one of the reasons given for injecting kids with a covid vaccine is that it might protect others. Many people think that the primary (possibly only ) reason kids have had vaccines so far is for their own protection and they worry about whether giving kids a long-term untested vaccine to protect others is even ethical.