plenty of other problems

- They often render differently in different browsers and other renderers. It's very frustrating to get consistent results (like a PDF). In complex diagrams I'd say it's basically impossible

- Renderers that are fast usually lack many features

- Nobody other than the browser seems to actually have all the features?

- You can link an SVG within an SVG (to make a lightweight composite image). But if you have two levels of indirection then all renderers I've tried will refuse to render the SVG

- Inkscape is basically the only good editor on Linux and it easily runs out of memory and crashes for complex images

- Complex SVGs eat all your RAM in Chromium (only marginally better in Firefox)

- Basic things like arrows from Inkscape will not render anywhere else

I still use SVGs all the time, b/c there are no good alternatives, but it's a crappy standard and I try to keep all my images/diagrams extremely simple