It cannot considered a business even if you are earning more than 30,000$ per year.
It will be considered as business only if in case you will hire some employees to manage your trading and you will process a legal papers like business permit and etc. but if you are doing it by yourself then it cannot be considered as business.
In my opinion, That's wrong. We are well aware that forex trading, Stock trading etc are regarded as businesses. So why not Crypto trading? If you're serious about taking your crypto trading to the next level, You can turn it to a
Full Fledged business. It's possible. It'll shock you to know that there are folks that take their trading as a business. Don't forget taxes are charged in some countries on capital gains. So to get past this, You need to start thinking of crypto trading as a business.
Business is the activity of making one's living or making money. – Simply put, it is "any activity or enterprise entered into for profit