First, I must confess to being a great fan of stevia - I don't mind the bitter after-taste - but can definitely taste it. My love of sweet has never gone away, which does not surprise me, as I was well-habituated/addicted to it in my life (oh and me with diabetes - no surprise!), and it is part of our species' make-up after all, so finding a good substitute that has no or minimal impact on my health is a godsend. Second fave is erytheritol, so am not surprised to find my go-to brand for sweeter-pie baking and ice cream making is a blend of both stevia and erytheritol - as in no 'digestive issues', no or very little effect on blood glucose.
I use half or even less of what is suggested in keto/LCHF recipes as a matter of course - I still like sweet, but have accustomed myself to a very little going a very long way.
My understanding of the problems with artificial sweeteners is that as with everything we eat and drink it has an impact on our gut-biome, and can affect our general digestion and our blood glucuse regulation in particular via that 'mechanism'. As in, the body does not recognise some of the super-duper sweeteners, one has an insulin response as the body believes it to be sugar anyway, I have read somewhere, (an insulin response is not fabulous for those of us with lots of insulin resistance), and then our gut biome has to deal with it, as they can't eat it, so it just has to be got rid of. How do you know if this is happening in your body? What is cutely called 'digestive issues' - you will know all right. And your blood glucose meter, if you are getting a spike that may be unacceptable for you.