Lin Yuan had his own reasons for making such a prediction.
Tower Canon had been recuperating in the shadow for thousands of years and only just managed to implement their Sleeper's Revival plan.
They must have anticipated many of these present issues.
Given that they could not allow the Sleeper's Revival plan to end before achieving its purpose, they had to have more moves they were waiting to use!
Lin Yuan's approach towards taking on his enemies was always to address the issues as they cropped up. Hence, he did not fear Tower Canon at this present moment.
When Tower Canon made their move, it would also allow Lin Yuan to get a better look at their true capabilities!
He would eventually have to take them on. He was already prepared to face the real Eight Pages of Tower Canon in battle.