I had a 2016 Emonda that had Mechanical Ultegra on it and I never had any issues with it. Even the bb and bearings were in perfect condition 6 years later. Late last year I decided to upgrade it to SRAM AXS as I really enjoy electronic shifting. I did have a 2021 Domane that had continue BB bearing issues and it drove me nuts. I ended up replacing the BB with a BBInfinite setup and that did the trick and never had problems with it after that.
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Brian | 2023 Trek Domane SLR 7 AXS | 2023 Trek CheckPoint SL 7 AXS | 2016 Trek Emonda ALR | 2022 Trek FX Sport 5
you should learn to embrace change, and mock it's failings every step of the way.