If you are building an engine today (~2023), Professionals are not building Hydraulic FLat Tappet camshaft engines? Don't try?

I think another often overlooked aspect of lifter/cam failure is cleanliness of the lifter itself. We know quality standards have declined and I would bet only about 10% of builders disassemble their lifters and clean out the check valves prior to installation. I do and I’ve found some interesting shtuff. Next to that I wholeheartedly believe lifter bores are not scrutinized during rebuild machining and they should be. And lastly for some unknown reason, most guys can’t get **** to fire off INSTANTLY on first start and are scared of rpm. My opinions.