In my experience these will probably work for quite a while. Don’t inflate them beyond their rating. It’s the right time to get the next set of tires. If you plan to go on a longer trip, I would suggest to replace them beforehand.

Damaged tire sidewalls to me usually mean replace immediately, unless running a lower pressure than rated and riding at a much slower speed.

If you can afford a replacement tire, I’d say go for it

You should try to replace it ASAP, you could probably get around for a bit with reduced pressure but once it fails you’re looking at a new tube as well

If it were me, I’d replace it as soon as I could.

On my fatbike, the threads are visible due to me driving with insanely low pressures. This is the rear tire which I have since replaced, but I drove with it looking like this for about 6 months with zero issues.

On my MTB, on the other hand, freezing temperatures made both of my brand new tires crack like this, and people on reddit told me to replace them immediately, but I didn’t, and a year later they’re still going strong.

MTB is tubeless and fatbike has tubes. If it didn’t, it would have failed way sooner, but because of the tubes it didn’t cause any issues despite me being able to stick my finger thru the tire and feel the tube inside.