Question is, what has more value to you - your free time or little extra money (maybe extra, but overall it can be also detrimental).They really do have a lot of quality vintage component's
As far as I watch the boards, these are from the era I hated the most (not meaning they are bad, but not interesting in terms of recovery for me) Lots of very low value THT black DIP, some SMD, no BGA, just 4-side and 2-side chips. Some tantalum, maybe Pd hot-dogs, some partially plated low grade pins, from time to time some finger... Overall, not too much.
Question is - do it add some value if you depopulate and sell ? I think if somehow yes, not too much. You can "test" depopulate say 10-20 kg of them, representative sample of the lot and weight everything what is sellable. Chips, tantalum, hotdogs, SMD resistors/MLCCs + low-value depopulated boards. Everyone of these materials has a price-tag. So do have the depopulated boards. And also intact boards.
Do the maths and decide. My forecast is not overall that much worth to depopulate. If it is your personal hobby to spend few days with hammer and chisle, heatgun and lots of work... Then go ahead