Like I said, data for the Delta variant is minimal but we should have much more soon.
Obviously, there is tons of data pre-Delta showing substantial inhibition of transmission by the vaccines (I can repost, again).
Inactivated virus vaccines have generally performed more poorly than mRNAs. More breakthrough infections and less protection against severe disease. If they block transmission then it's good supporting evidence that the mRNA vacciens will against delta as well! This is good news!
The mRNA tech is not sketchy. You are one of the few people still terrified of it. It's biochemically simply, has a short halflife in the body, and is very well studied.
The only thing you can do is fearmonger about the antigen itself: the spike protein. Many other vaccines encode the spike protein in some way, as does the virus itself (shocker). Basically, your line of attack on the vaccine is hilariously inconsistent. If the spike protein is SO DANGEROUS then you should be cowering in fear from COVID.
And yes, COVID poses a risk to children. It's hospitalizing them at 3x the rate of flu. If we had a flu vaccine that worked as well as the COVID one does, many schools would mandate it as well.
You can see the writing on the wall though. You know the vaccines work. You know its just a matter of time before that mandate comes for you.