Yes, the road is bikeable, but that is not a good reason to set bicycle=yes. That tag indicates that bicycles are legally allowed to ride on a particular way, not whether or not the incline or surface are suitable for them.

See bicycle=yes for more details.

For this reason I suggest reverting these changesets where the (legal) access tags of paths have been used based on personal preference of what is and isn't bikeable.

My understanding is that bicycle=no should only be used when there is some legal reason preventing bicycles to ride there. If the problem is that you don't want them to appear in your bicycle routes, then tag their smoothness, mtb:scale, or whatever else instead. Looking forward to finding an agreement here.