You are allowed to sign up as an affiliate at BeRush and then use your referral link to register a paid account on SEMrush.

This statement is false. BeRush, Semrush's affiliate program, explicitly prohibits affiliates from using their own referral links to purchase Semrush subscriptions for themselves. This is considered self-referral and violates the program's terms and conditions. The purpose of the affiliate program is to reward affiliates for referring new customers to Semrush, not for personal purchases. Engaging in self-referral can lead to the forfeiture of commissions and potential termination from the program.