All that 0.00000547 BTC transactions with text in address s…

Twetch · February 28, 2021

All that 0.00000547 BTC transactions with text in address started at Aug 1, 2020 and is still going on:
https://www.blockchain.com/btc/address/1topic1xxx1hmwyda1xxxxxxxxxvo8wMn?page=413

Text point to:
https://memo.sv/topic/hmwyda

What's behind this?