This already makes a large assumption about the type of reactor you are using. For example, a liquid fluoride thorium reactor (LFTR) does not suffer from the xenon poisoning issue, as do many other designs.
It's an interesting thing that pro-nuclear people always talk about "Gen X" power plats with no issues and just a big fat gogo stamp on them, but when you ask about any commercial examples they all come up short.
I'm pro nuclear, but I don't think using hypotheticals and futures is how to convince people nuclear is good, it's good because it works and it doesn't poison the planet (Yes there have been accidents and they have been dramatised but count deaths and it becomes as irrational as being afraid of flying)
Molten Salt reactors are designs from the 60s-70s and afaik no one ever built on commercially. No one was willing to take a gamble on building a new design when we had working reactors already and approval for those was already difficult enough.
AFAIU the corrosion problems are still not solved from a commercial PoV. Ie, without having to shut down and replace piping too often for it too be viable.