I guess I was really just speaking for myself (i.e. that I would never think of having eggnog at any other time of the year, so the dose is adequately low).
Because of that, this was another situation where I think regular eggnog is best.
I am sure it can be triggering to others but to me, my desire for sweet is now so low (therefore rare) that I prefer to have the real thing and enjoy than to take chances on what some chemist has come up with that tastes sort of sweet. They test for “it doesn’t kill people” but, for most sweeteners, we are the guinea pigs when it comes to long term affects on the micro-biome.
On the other hand - natural old sugar is well known to not cause any harm in very low doses (10s of grams a day). So, if I stay under 20 grams a day for months, an eggnog at the end of the year seems much better than some, not as good tasting / not what I remember tasting low-carb knockoff.