Bitcoin is accepted in many countries in different ways, since you simply buy it and sell it like any other asset or digital possession.
In many places on the planet, people buy things with art, watches, vehicles, etc., let's say that barter is still active, and none of that is "legal" to pay for goods and services but they use it, that configuration obviously depends on the country, now, to declare that in a sale contract the legal tender must be justified with a deposit in an account or check if applicable.
So, there is a fiscal order in that sense, so making bitcoin legal for payments, even if it is not legal currency, is a solution for many users, in those cases that "legal status" is welcome.
Again, you are already free to trade Bitcoin in most countries. Nobody is stopping you. Bitcoin is already legal for payments and has been since it was invented in almost all countries.
People who are asking for legal tender status are asking for the government to use their power to force people to accept Bitcoin.
It is also perfectly legal to use barter to pay for things in most countries.
In countries where bitcoin is not legal tender their are some point of sales you use bitcoin to make and they can take legal action against your and you have no prove of payment since your means of payment is not recognized in that region. Their is nothing wrong with legal tender their might be some level of control up to a certain level when it comes to the bitcoin owns and distributed to citizens by their government they can be monitored.
Again, that's not what the term, "legal tender" means. The word you seem to think it means is, "legal". You can currently pay for things with Bitcoin if you want, and the counterparty freely accepts it.
What legal tender means is that you want to force people to accept Bitcoin even if they don't want to.
next "legal TENDER"
unlike other things that are LEGAL in legislation. 99.999% of those things are not treated as convertible currency and common accepted moneys
governments that declare something as legal tender then allow businesses to treat it as good as money.. but this does not mean replacing current fiat. it just means extra regulations apply to the rules of legislation when getting legal tender status.. such as banking rules and taxes
Any business in the United States, right now, under today's laws, can accept Bitcoin as payment. Nobody is stopping them.
I can also accept gold as payment, or baseball cards, or shares of AAPL.
There is no law against any of this.
What "legal tender" means is that businesses are forced to accept Bitcoin as payment.
And people should stop asking for that, because it's wrong...