Don't see why you'd be tainted. Why do you feel that? Have you seen this in your interviews/conversations?
you have heard this a million times and know what it means but here it is again: LIFE IS SHORT and it can be shorter than you think it will be. your time is just that, your time. so go do what you want to do, and if it is wrong well you tried it. that's what really harms folks imho, it's not the paycheck but what you would do for free that matters the most. if someone is happy flipping a burger, not only is that honorable work but to the folks that like burgers, they get their food made by someone who loves flipping burgers. it could be you are 'burned out' per say and who knows, maybe working for yourself or getting into a new field or something as mundane as gardening or doing something 'outside' might be just what the doctor ordered.
Solutions Architects are usually customer facing engineers who enable sales. You shouldn't have any trouble switching back, just come up with a good narrative about how you're looking to bring your focus back on to the engineering side of things.
Maybe the role of product owner might be something to consider. You get in touch with developers and use your programming background for guidance them and then you can focus on adding feature clients will love.
I'm in a very, very similar position. I would like to chat off HN if possible. Do you have contact info?
When Endeavour is lost - your talking to a the difference between savage and an endless computer.
consider changing the title to "Ask HN: Feel Like I’m Stuck in an Architect Role. I Want Out"
Now that you have this role, you can try to adapt it to focus on the technical architecture.
This will require you to distinguish between the functional architecture, the logical architecture, the technical architecture, the physical architecture, the deployment architecture and the security architecture; but it will allow you to explain the differences to your interlocutors and especially to delegate what does not interest you and to keep tasks where you feel relevant.
You can take advantage of your position as an architect to choose :)