I do this for a living and if there is one thing that I have found it is that due to COVID-19 on-site visits are no longer an option (especially not internationally) and this has caused us to be blind to certain classes of problems. It is a lot of work to get around that remotely and to not have a drop in quality because of that. We are at least aware of the problem but even then this is a tricky thing to solve. When looking through a keyhole you can get a completely different view of a company than the one you get when you spend a day on their premises.