The mRNA vaccines aren't vaccines in the traditional definition of the word.
They certainly are.
No different than seasonal flu vaccines. Respiratory viruses like flu and Covid mutate too much to allow vaccines to remain fully effective against them. Additionally, Covid has new tricks that most viruses do not have, which shut your immune system down to gain a greater foothold before it can kick in.
Again, this has been explained to you many times. How many times does it need to be repeated, before it sinks in for you?
5?
10?
100?