I don't know much about Tremlett except his association with the Guardian, and maybe I was a little harsh on him (it's not a good article, but a tiny bit better than the inexplicable headline might indicate), but the Scottish Parliament hasn't even voted on whether to seek a referendum yet, and already I can't turn anywhere online without seeing the same old claptrap cited as Gospel when it's readily debunked, and has been for ages (any ire you may have detected was spurred by and directed at that, not you, Ghost Dog).
If we do decide to go for it, it's going to be long, exhausting couple of years or so (following on from several long, exhausting years ...), and meanwhile, the crapfest that is Brexit will roll on, and we in Scotland will no doubt be used as a scapegoat/punchbag to release and diffuse the tension it's causing.
As I've said before, the Scottish Government sprang into quite a diplomatic onslaught once the Brexit vote happened, and the response from major EU figures has been better than I'd have expected. I'm hard put to find any significant European politician who's recently been anything but positive (or at least guardedly neutral) about an independent Scotland's prospects of joining the EU if that's how things pan out.
Let me know if Tremlett writes anything about Gibraltar ...