There will definitely be paid viewers or even bots but sadly, we don't know the exact number but maybe the original number of viewers won't be as much as paid viewers or bots.
The algorithm will be replaced or updated if bots or paid viewers are found because the competition will not be healthy.
Those with money could pay for them all, while those who relied on genuine viewers could only keep trying to earn them.
And even though it's a strange world, many people have benefited from videos like that and will continue to make more videos because that's where the money will flow.
People that are providing those fake and paid views and bots will always make sure that they are undetectable, and even if the algorithms will be changed or updated, they will still find a way to do this as they get paid for it and humans always find a way to keep doing what they've been doing regardless of any changes in the system. Also, algorithms won't go beyond a specific limit and that is the reason why they can't detect them after some activities done by the workers behind them.
However, people that get genuine viewers, likes, followers, and interactions tend to have a stronger channel since they won't have the fear of their fake and paid stuff getting exposed and them losing credibility or the ability to get viral because sometimes when an algorithms find something suspicious, they will simply flag a video or the channel itself.