I don't know mate, if statistics are primarily based on a spike in aggressive cancers since the COVID vaccines, would you agree more concrete evidence is needed,
The reason I mentioned the COVID virus being a possible link to aggressive cancers was primarily based on what you mentioned, which is COVID is know to lower the immune system, I take it you do know the human body fights and destroys thousands of cancers cells every day ?.
Would you agree that it's a possible contender for cancer developing quite aggressively with a weakened immune system from COVID.
There maybe something you've missed also, the fact that during the first 2 years of COVID many cancer patients where diagnosed later than usual, because of a shortage of nurses and doctors plus also because of huge waiting lists and hospitals over run.
I take it you know doctors can never truly say how old a tumor is ?.