It is nonsense though.
You're trying to downplay what United have done in the PL era and make out the PL now is infact the strongest we have ever seen - hence them struggling and the mighty Liverpool doing well (I presume).
It becomes nonsensical when you consider all Liverpool's previous triumphs were in an era that was pre PL and at a time of footballing dark ages when the game was much worse and the League dismally poor in quality.
For what it's worth the PL isn't the strongest it's been currently as
@#07 has pointed out.
More teams are challenging, Leicester winning last season and the poor European displays all highlight this.
It's anyone's for the taking. No one is particularly impressive.