It depends heavily on what you do and what you're comparing yourself against. I've been making a living with IT for nearly 20 years and I still don't consider myself to be an expert on anything, but it's a really wide field and what I've learned that the things I consider 'easy' or 'simple' (mostly with linux servers) are surprisingly difficult for people who'd (for example) wipe the floor with me if we competed on planning and setting up an server infrastructure or build enterprise networks.

And of course I've also met the other end of spectrum. People who claim to be 'experts' or 'senior techs' at something are so incompetent on their tasks or their field of knowledge is so ridiculously narrow that I wouldn't trust them with anything above first tier helpdesk if even that. And the sad part is that those 'experts' often make way more money than me because they happened to score a job on some big IT company and their hours are billed accordingly.

And then there's the whole other can of worms on a forums like this where 'technical people' range from someone who can install a operating system by following instructions to the guys who write assembly code to some obscure old hardware just for the fun of it.