If the bevel is actually wider after resharpening, it means that during some part of the sharpening passes, the angle was actually lower than original factory angle. Especially as done freehand, it'll happen because there's a natural tendency for the hands to rock forward/back a bit in the stroke on the stone, resulting in some convexing of the 'bevel' as the spine's elevation above the stone varies up & down. It may be that the edge angle at the apex has remained relatively the same, but the held angle pivoted to something lower during some part of the sharpening pass on the stone, therefore removing more metal at or above the original bevels' shoulders.
In freehand sharpening, there's essentially
no chance the held angle will remain perfectly set at a specific degree value during the entirety of each & every sharpening pass on the stone. So there'll always be some of that convexing going on, even if most of the variation in angle is occurring behind the original edge, affecting the bevels' width closer to the shoulders, but not necessarily the apex angle too much. In fact, one can 'bias' their hold on the blade and their motion on the stone, to keep most of the variation in angle behind the apex, so the apex angle won't necessarily vary too much, but the shoulders will become more convexed and/or blended into the primary grind of the blade. This contrasts with many factory edges applied with powered grinders, as they'll usually remain much tighter or even fixed in angle, relative to the machine doing the grinding, as most of the sharpening 'motion' will be along the length of the edge (moving heel to tip), rather than a back/forth edge-leading/trailing direction, as we normally do on stones by hand, and introducing that angle-pivoting/convexing aspect in the process.
Bevels will also get wider if sharpening is done on softer stones (some waterstones, for example) or any other media with a soft/compressible substrate (like sandpaper over leather, mousepad, etc). This is because they'll also introduce some convexing into the sharpening process as the abrasive's substrate tends to wrap or form itself around the bevels' shoulders and makes contact higher above the original shoulders of the edge grind.
BTW, the 1st photo in the OP shows vertical/diagonal scratches above the new bevel shoulder, which is more indication the blade angle dipped a little bit at some point. It's extremely common, and virtually everyone has done it (and most of us likely still do
).
