I’m a big fan of my aeropress which gets used 2-3 times every day but it’s not an espresso substitute. And a cafetiere certainly isn’t.
You can argue that neither is a Nespresso, and as regards taste, of course YMMV but with 100’s of pods and varieties I don’t think anyone can really say ‘it doesn’t taste that great’ – it’s either just not your style, which is fine, or you haven’t found the right pod yet.
In the end is it ‘as good’ as a proper pumped through ground espresso machine, probably not. And if espresso isn’t your thing or you’re going to water it down or make a milky drink from it you probably won’t benefit from it either. But if convenience, reproducability without faff, and being able to swallow your anti-big corp pride is what you’re after, I reckon it’s perfectly good.
(yes, I have one)