Hm if it were me I might use a spreadsheet to make a bunch of label texts then copy/paste the sequential text into inkscape text tool as one big chunk of text.
You can then object to path, ungroup, and regroup as you need.
How many are you talking?
PDF might be possible, since it eliminates the whole stroke to path business. It’s possible to make simple PHP (and other language) programs that will generate PDFs. You could make a script to spit out pdfs at will.
You could make one label, then go in with a text editor on the SVG and add a ton of more text objects. Reopen in inkscape, convert to paths, and voila. Actually that’s what I would do.
Again, comes down to “how many?” to decide how much effort to expend here.