I don't fault someone who feels a need to use the engine of the world's most popular RPG to up their accessibility.
But the other side of that is, system matters. There's not much that can be described as "based on" 5e that I'd find particularly attractive, either.
I mean, yeah, we don't know what that'll mean, but you have to find at least some elements of the based game attractive for that to be a good thing. Those elements are pretty much either things I'm really luke warm about (D20 based resolution) on the whole, dislike (classes, levels, elevating hit points) or actively consider a design mistake (Advantage/Disadvantage).
That doesn't mean I think actively hating on the people doing it is appropriate, but I do kind of reserve the right to roll my eyes about it.