"Just asking questions" - the comfort blanket of the uninformed (whether deliberately or not).
The vaccines in question were not developed at "breakneck" speed. I watched the Dimbleby lecture where Prof Sarah Gilbert (led the Oxford vaccine team) described how the work on the Oxford and MRNA vaccines had actually been going on for years. What had been realised after MARS and Ebola outbreaks was that there was a risk of more new viruses and the traditional vaccine development approach was too slow to respond. So they had been developing a new vaccine delivery infrastructure that would then allow for quicker development and testing of vaccines - so the delivery mechanism was already tested and safe and therefore just needed to be adjusted for a new virus. COVID was sequenced within days of appearing and the initial vaccine was ready for testing within a month or two. She also explained that none of the testing was skipped -what allowed quicker deployment was that they were funded to prepare for the following stages before completion of prior stage - so for example, mass production facilities were being prepared before testing was complete. If anything was done at breakneck speed it was political and funding decisions, not a reduction in scientific rigour. The MRNA approach was an alternative but similar logic to the Oxford one
The reduction of efficacy is due to the amount of variation and Omicron has significant variations. She also made the point that they could produce a variant of the vaccine to a new variant virus within 3 months but that there is always a balance between higher efficacy versus production delay to switch. So if the vaccine is reasonably effective on a new variant, it is more efficient to keep using the current stocks. It may be that they end up producing a new booster adjusted for Omicron
Omicron has resulted in much higher hospitalisation for younger populations - where before there was a low probability of illness it seems that is higher now.
No matter how many times all this has been explained there is a cohort that simply refuses to accept it .
Had any of the vaccines been toxic or harmful there would be huge numbers of people showing symptoms of that given the now billions of vaccines administered, yet they will focus on a few cases .
The Mnra vaccines don't even enter your DNA, it tells your T cells to look out for and attack the spike protein of the virus, to put it in lay man's terms "it sends a text to your T cells " thus the M
Of course the " waning " is something highlighted in the middle of 2020 and gave rise to us having 2 jabs to extend immunity to 6 months so that populations could be offered some protection.
Then Delta and Omicron comes along, and 3rd jabs are required.
These vaccines are being updated,tested and if its believed needed will be produced and this is a fact, AZ, Moderna, Pfizer, J&J continue to spend billions to try and be ready for the next variant.
Questions regarding vaccines have been asked by suitability qualified people since phase 1 trials began in May 2020, asking questions from highly biased individuals like the doctor who is against mandatory vaccination as he is unvaccinated and probably won't get vaccinated, frankly is BS.