Hhmm, if it was a ton of text, like a page full of text, I wouldn't be surprised if Inkscape crashed. But for something like a title or banner, it would be unusual to cause a crash.
Do you rememeber specifically which extensions caused a crash? For me Add Nodes, Interpolate, and Perspective often cause a crash. And some others, less regularly cause a crash. I've learned to save my file before I apply any of those. Sometimes, I have to do whatever I need them for, in a new blank file, and copy the result into the file where I'm working. If I could pinpoint anything specific, I would report as a bug, but I've never figured out what the deal is with those.
Note that filters are famous for causing crashes too, mostly because they often eat up the RAM.