Second, you haven't accounted for the fact that teenagers can transmit the virus. Even if the vaccine is "worse" the virus for teenagers (which is not necessarily true), stopping the pandemic can mean fewer deaths in the long run.
Second, kids/teenagers shouldn't get the vaccine if the chance of the vaccine affecting them negatively is higher than that of COVID-19.
Everybody that is seriously at risk when it comes to COVID-19 (the elderly and the ones with underlying conditions/obesity) should have already received their doses.
Second, you (or the original poster) can't criticize the methodology of counting Covid deaths (every person who tested positive is counted as a death) and then use the exact same methodology to count vaccine deaths.