If it was for Monero mission, I don't think they would shut down their service because Monero is a privacy coins and won't care about any pressure.

Someone said it could be due to tightening regulations and government are cracked down few privacy tools, if it was the reason, it would be better if they're being honest.

Nevertheless, it's better to see a privacy oriented tool shutdown earlier than getting caught and forced to reveal information to the government.