even though most cryptocurrency users doesn't want to see bitcoin being imposed with taxes i think it will still have a positive effect to the greater good of the community.
one of which is tax will give cryptocurrency a good impression to those who distrust it.
since being imposed with taxes means that governments recognizes the legality of it.
Fiat exchanges are temporarily disabled, so I think after imposing taxes they might lift those restrictions and that may be a plus point, but at the moment people are engaging with P2P system, which is working great, so it would be both a positive and negative approach for the users/holders.
Also, I agree with your point that it will induct courage and believe among the newcomers and orthodox mentality people who don't believe this system as of now.