My current job started in September 2001, and because of the grounded airspace that month I was offered remote status, and there I remain after 21 years. One good thing about the company is we rarely use cameras on calls. We did try it briefly at the start of COVID lockdown did we try, but everyone found it distracting. (I was shocked how young my manager looked, and he probably felt the same way in revers). But teleconferencing among dispersed and remote staff has been a thing here for decades (could say we invented it, actually), so voice-only calls with screen sharing fortunately are the norm.
One thing I noticed in hearing myself on recorded calls is though I may look like I'm in my 7th decade, I don't sound it. In fact I'm the guy constantly pressuring younger people in my team to stop using tools that are out of date or no longer available, to adopt current practices (trade fragile 20 year old Excel macros for Postgres, trade CMD scripts for Powershell, move apps to the cloud, etc.).
That's key: people forget your age if you bring sharp chops to the table and stay current with the tech stack. It helps to use an ID picture that looks younger, something that's been easier now that we take our own badge pictures rather than go to a corporate DMV-style photo booth.
Some of the people I work with peripherally, I suspect, would be shocked to meet me in person (and that includes some in my chain of managers). I have no illusion or desires around climbing that chain, I just want to be paid a competitive salary to develop solutions. I try not to date myself in conversation unless I feel safe confirming my sexagenarian status (that's an age range, people).
Like the OP, I look forward to doing this until I'm ready to stop (or forced to by real aging issues), not because my birth date in an HR database.