This has had quite a few discussions including a couple large ones:

Bitcoin becomes Legal Tender in El Salvador - https://news.ycombinator.com/item?id=27445119 - June 2021 (134 comments, ongoing)

El Salvador to adopt Bitcoin as legal tender - https://news.ycombinator.com/item?id=27408683 - June 2021 (398 comments)

El Salvador Congress Approves Bitcoin As Legal Currency - https://news.ycombinator.com/item?id=27444718 - June 2021 (48 comments)

Bitcoin is a legal tender in El Salvador for all transactions and tax payments - https://news.ycombinator.com/item?id=27444400 - June 2021 (8 comments)

El Salvador Bitcoin legal tender is much bigger news than most realize - https://news.ycombinator.com/item?id=27421705 - June 2021 (7 comments)

Bitcoin: El Salvador plans to make cryptocurrency legal tender - https://news.ycombinator.com/item?id=27416409 - June 2021 (8 comments)

El Salvador to offer residence and no capital gains tax to Bitcoin investors - https://news.ycombinator.com/item?id=27416068 - June 2021 (6 comments)

El Salvador President: 1% of BTC invested would increase GDP by 25% - https://news.ycombinator.com/item?id=27414667 - June 2021 (14 comments)

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I guess we'll leave this one up and then downweight follow-ups [1], unless significant new information [2] arises.

[1] https://hn.algolia.com/?dateRange=all&page=0&prefix=true&sor...

[2] https://hn.algolia.com/?dateRange=all&page=0&prefix=false&so...