Flushing after closing the lid is actually hygienic.
May I interest you in a (not toilet) paper I skimmed back when Covid was still a bigger issue? https://doi.org/10.1063/5.0013318
In another, newer, paper (again, not the toilet kind of paper) I just found, researchers basically used lasers to see and analyze the spread of aerosol plumes after flushing: https://doi.org/10.1038/s41598-022-24686-5
I am not interested in your (not toilet) papers. I’ve been doing fine so far and I believe that the health benefit is negligible and does not outweigh the impact on my quality of life.
In other words sometimes ignorance is bliss and knowledge can be a curse, I’m not trying to be a neat freak germaphobe.