One thing you also have to be very careful of is pointing out a problem or inefficiency that exists only because of work you or your company has done. I have a

One thing you also have to be very careful of is pointing out a problem or inefficiency that exists only because of work you or your company has done. I have a very problematic supplier of business critical bespoke software that we can't move away from, and the devs there have a nasty habit of pointing out flaws in our processes, talking down our other suppliers and making snarky comments, when those flaws are usually either workarounds to deal with the shit system they have developed or persist because while we would like to do things in a more modern way we can't as we can't rely on them to even implement an address validator that works. Frankly the only reason they're still alive and I have a job is Covid and remote working.