How risky is it to implement RPKI [1] in an ISP? If I push my tiny ISP to add it is there a chance they knock everyone off the local tiny ISP and if so for how

How risky is it to implement RPKI [1] in an ISP? If I push my tiny ISP to add it is there a chance they knock everyone off the local tiny ISP and if so for how long on average? I should add they have a skeleton crew network engineering team. [1] - https://isbgpsafeyet.com/ https://isbgpsafeyet.com/