The results are changing not only in weightlifting, I follow the results of the 2012 Winter Olympics in Russia and a lot has changed there, some athletes have risen by 2-3 positions.
As for transgender people, I agree with you, this is an absurd decision - in my opinion they should participate in competitions based on their biological sex and not gender, which can be changed 100 times a day.
This transgender thing is very subjective.
Just as doping tests change very quickly from competition to competition by allowing or denying certain components, testosterone tolerances in a transgender person also make a lot of difference from one participant to another.
People are changing very fast, and soon it will no longer be possible to reach a consensus on what is fair and what is not... I believe that soon it will be able to create a single mixed category between men, women and any other gender.
I have nothing against transgender people, but biological sex is not a subjective concept, but an objective one. If we allow biological men to compete for women, then we are destroying women's sports. I think there should be a category for transgender people, or the competition should not take gender into account, but the biological sex should be taken into account.