It must be very comforting as a passenger to possess as such superior knowledge of an airliner's safety that you are gifted with superior judgement to that of the airline operating it.
Two points on that:-
1) It helps if you work in the aerospace industry and have had close links with Boeing and one of the primary suppliers of the relevant troublesome technology.
2) Regardless of the above, anyone who places their faith in a service provider has a right to hold an opinion and act accordingly. I don't necessarily have better knowledge than the manufacturer or the relevant regulators, but my
perception is that neither have done enough to reassure me.