My DD (2.5) has a Leappad which we bought her as a gift from her new little brother. She loves it and is able to navigate it well.
We started off saying she wasn't going to be able to play with our phones / iPads etc and tried very hard to keep her tech free. Unfortunately we didn't communicate this with our parents so (independent of each other) both mine and my DH's ended up letting her play with their iPads and phones when she was them, looking at photos of herself and her cousins, watching Mr Tumble on YouTube, playing kids educational apps etc. (It's backfired somewhat though as when Nanny arrives now she's literally going 'yay! Nanny! Hello Nanny! iPad!' which is awkward but a by product of Nanny letting her play on it EVERY TIME she sees her)
She loves books and I was initially worried that giving her the Leappad would stop her doing that or that she'd be on it all the time but she's actually pretty good at self regulating with it. It's a godsend for the half hour when I'm sorting her dinner and having been pushed into getting it (mum in law kept hinting she should have one from age 1 (!) and it was only that we kept firmly saying that we wanted to get her one from her new brother that stopped it arriving even earlier) I'm less grumpy about it now. That said, we keep it and she doesn't have it in the toybox the whole time.
I don't think we'd buy her a Kindle Fire (although they are coming down in price all the time) but as one thing she plays with along with everything else I don't think it does any harm in moderation (and at home - we don't take it out with us, and she doesn't use it for unlimited periods).
The language benefits sound ace - and have got me thinking. I speak a second language which my husband doesn't know. I'd love her to know it (at least conversationally) but I don't talk to her in it because it feels like I'm excluding him which isn't fair.
Don't worry about people thinking you're a shit parent though - in my experience people will always find something to judge.