I did some research as well, to see if I could independently substantiate your claim that "many scientists and doctors" are concerned. I found a few, but they didn't seem all that credible to me. Is Dolores Cahill one of your sources? Or, Michael Yeardon? Or maybe it was from the Association of American Physicians and Surgeons?
Anyway, here's one for you:
"Late last year, a semi-retired British scientist co-authored a petition to Europe’s medicines regulator. The petitioners made a bold demand: Halt COVID-19 vaccine clinical trials.
Even bolder was their argument for doing so: They speculated, without providing evidence, that the vaccines could cause infertility in women.
Social media quickly spread exaggerated claims that COVID-19 jabs cause female infertility."
I won't quote this one regarding long term effects extensively, but the highlights:
Vaccine hesitancy is being fueled by a coordinated disinformation campaign specific to this pandemic;
Numerous spurious and scientifically illiterate arguments are used;
While concern about long-term effects is reasonable, they are used by the most ardent, bad-faith antagonists and at their core, are simply an objection that we cannot know for certain what the future holds;
Vaccines do not remove or significantly attenuate biological functions in your body;
In contrast to many other drugs taken for extended periods of time, a vaccine is typically a single intervention;
We know exactly which substances are present in the vaccine formulations, and we possess a detailed and thorough understanding of their properties and safety profiles;
The risk of severe immunization-related complications declines to virtually nothing after about three months;
The mountains of data we have available to us now show that COVID-19 vaccine-related complications are exceedingly rare, and occurring within 60 days of the vaccination;
And a direct quote:
"To put vaccine risk in perspective, consider the most frequent serious adverse event in any demographic: the rate of myocarditis in younger males. According to available evidence, if Fenway park were filled to capacity with some 37,000 fully vaccinated men aged 18 to 24, just two might experience transient myocarditis. By contrast, if all 37,000 of these men were unvaccinated and infected with the delta variant, many more would experience a diverse array of clinical outcomes, including extended periods in hospital, virus-induced myocardial injury, and diverse post-acute health complications described as “long COVID.” In other words, the sum of the diverse risks associated with vaccination are dwarfed by the diverse and incompletely understood risks posed by the novel coronavirus."
Do you know where much of the information for the vaccine hesitant; anti-lockdown; anti-mask folk originates? From 12 social media influencers.
How much of your "well-crafted, researched" beliefs came from one or more of these 12 social media influencers?