Anyone who would deliberately choose the Janssen J&J over the Pfizer Bio-N-Tech stab gets what they deserve. This is why it pays to do your own homework and ignore the mob.
Why's that? I've done some homework on this, perhaps not as much as you so I'd be interested in learning what you know.
I did find this on WebMD which shows the J&J has had no serious side effects and no serious anaphylaxis reactions vs. Pfizer & Moderna which have. What can you share?