mRNA vaccines are not new, they have been under development for over 20 years. It's just that they don't work. Also the spike protein doesn't always stay in the muscle tissue, but can escape and float round the body, before settling in important organs. There is no research or information on the effect this will have, but it is certainly not beneficial.
I understand how they work, and they are a step closer to the use of the live virus. I just don't understand why they don't use the live virus to create natural immunity. Oh wait, there isn't any money in that.
mRNA is an old technology indeed, however it's far from ineffective. It's a promising technology to even cure some forms of cancer, which is currently in clinical testing, I don't get where you got your sources from. On top of that, there are already quite a few vaccines that are using a live virus to create immunity, such as the AstraZeneca, Sputnik and Johnson.
I think you got it all wrong.