Accepting Bitcoin as a payment method provides customers with more payment options, which will attract more crypto users and help their business grow. This decision also helps to spread Bitcoin to more people. As time goes by, more and more people will understand and use it.
Making Bitcoin an additional payment method in doing business is indeed a very good step and as long as it does not interfere with the development of the business being carried out, there is no problem to think about if the buyer and seller already have an agreement for this. But it would be even better if it could apply to all countries because I also really like the payment method via Bitcoin even though payments at this time still very often use payments via fiat for anything.
But judging from the title of the discussion, I hope that the OP who runs the business will accept payments via Bitcoin forever and not just for one month, because that can also help Bitcoin to be known by many people and also help his business stay smooth with sufficient capital. already exists and this is certainly not wrong to do as long as it can expedite a business.