Good morning. 
Yes I'm aware that these tags are not required by OS, however they are required by wandrer.earth.
I'm in the process of getting the cycling rules changed in Wandrer so that the implicit rules are used, only excluding such ways where cycling is specifically excluded (rare, but it can happen).

You can see the wandrer rules here:  https://wandrer.earth/filters

... and my request to change them here: 
https://feedback.wandrer.earth/272

But in the meantime (as this has been ongoing for a very long time) it would really help many people to have these tags in place.