In theory you could do that yourself with a vector basemap. Wouldn't it be great if browser minimum font size applied to absolutely everything (ie. minimum font size actually means "I cannot read anything below this size so never render it like that").

That is a constant problem on Google's and Apple's phone maps. The names are almost unreadable to many people I've encountered with vision in the normal range of issues (e.g., wear glasses, etc.).

Apple Maps does respect the "text size" system setting. All the text including street names will go very big if you want them to!