As I said before, I´ve never said that the classes are less unique, I said that a class could fulfill a lot of roles, so it doesn´t matter if you do not have a cleric, a warrior of a rogue in the party, for example, because there are many other classes that could do their job, even more than in previous editions. Also never said I liked it that way, I was exposing bare facts.
You do not seem to understand that the skills, saves and attack rolls in 5e are calculated by 2 things: Proficiency and stat.
I do know that proficiency governs a lot of things in 5E. But saying the proficiency bonus and skills make classes equal? Just no. A class is defined by so much more than the proficiency bonus, especially in 5E, where every level or so classes gain a specific ability.
Just so you know, I'm currently DM of the Descent into Avernus campaign and we lost our cleric during chapter 2 (those who play know what) but we still have a warlock and a druid for healing and we are HURTING. We are usually forced to rest after even an average fight. Their healing just cant maintain the party.