Paid online is a scam initially started by Microsoft then Sony and Nintendo gave into the greed. Remember how the latter two touted free online as a selling point and subsidized the costs of servers themselves? Nintendo isn't exactly known for having a good service either.
Don't feed any of their greed. Do not buy a subscription. If you want free online, get on PC.
Paid online is a scam started by Microsoft and Sony and Nintendo gave into the greed. Do not give into their selfishness by supporting this fraud. Make them subsidize server costs without a subscription like they used to.