How many monero do I have? I guess someone can tie me up and beat me with a rubber hose, but they'll get my bank account info, cash, and precious metals, my wife, my dog..... There's no preventing this attack whatever coin you use. But as far as being a monero supporter marks me, who knows how many I have and if it would be worth the trouble to beat me? If you are worried, don't post on monero threads and that is that.
The amount of your assets can be determined off the blockchain as well and would likely be investigated just like with btc. The point I am trying to make is using a coin specifically intended for better privacy does place you in the camp of users who are likely interested in better privacy which may expose you to extra scrutiny.
But as far as being a monero supporter marks me, who knows how many I have and if it would be worth the trouble to beat me? If you are worried, don't post on monero threads and that is that.
Not a very useful currency if you cannot advertise that you accept it and don't ask to pay In it and don't discuss it openly. I agree with your first point--my point is that any currency can suffer this fate if it is viewed as "unwanted" by TPTB--it isn't a matter of group size as the Nazis proved with wealth seizures and the US government proved with gold bans. The only thing a privacy coin can do is be private on chain, the rest is up to you. In this case i can create an off-chain wallet and fill it with coins bought through I2p/tor using best practices (not revealing an IP) and no one will know the asset I hold or how much. Asking any more of a privacy coin is asking it to control the human actions involved too.
The second point misses that black market channels will still be available, and if we are living in this type of draconian control environment, many will only use monero as a wealth protecting asset. The fact that this kind of environment is being talked about as normal (even being taken for granted) should give some insight on how far we've come to the Orwellian idea of thought criminals--asset criminals isn't that big of a step towards the quicksand of full-fledged control systems.