Again, by what has been discussed at length on the pizzamaking forum Neapolitan sub-forum the source of heat has largely nothing to do with the output (pizza). The taste is generated from cooking the high temperatures (750F+). The smoke is all above the pizza in the oven if the oven is convecting properly.
Gas is more convenient and I believe there have been some people who have had issues with the chimney design of the Ooni 3 (you would need to google - I am not sure of my facts here - just a vague recollection).
Any pizza oven is better than no pizza oven and the Ooni is a nice little oven for sure. Just make sure you pick one that gives you a little extra room to work with. Trying to fire a 13 inch pie in a 13.5 inch oven is really hard.
The launch from your peel is trickier than you might imagine. You can't just jiggle the pizza off the peel. It will contract a lot and you will have a pretty small, thick pizza so it's nice to have a little room to give you a margin of error.
All in all, making pizza is more fun than making curry though - IMO. And a lot more challenging as well.