Well soon enough you'll have tier 2 players being matched against tier 4 because it's how you "encourage" them to cough up to get ahead.
There are currently no "tiers" in the game, the ships switched between levels throughout the Alpha and Beta without much impact.
Now we get a fully tiered system in which a higher tier Subhull Y Class X ship is better than its lower tier counterpart not because the person flying it has more experience but because it now gets additional health and a damage just for being a Tier 4 instead of a Tier 2.
For the most part the progression system in the current game was horizontal rather than vertical, outside of a select few abilities it didn't really matter because they were all situational or play style dependant.
A corvette with disruptor pulse is not better than a corvette with blast pulse in every scenario, they have different roles and playstyle. A Dreadnought with nuclear missile is not any worse than a dreadnought with a nuclear salvo because those abilities fill different roles (single target nuke vs larger scale AOE/area denial ability).
This 2.0 system changes all that, and effectively brings the game to what other vehicle based games and moving away from the moba style even battlefield with COD/BF style progression.
So yes quite a few people are displeased, WoT/AW/WoWS and the likes are hugely successful games because they are very well monetized, the competitive scene in them however is non-existent (WoT/WoWS is artificially fueled by Wargaming and there's pretty much no scene outside of it) the and they appeal to a very select types of players.
DN started differently and it seemed to appeal to a considerably much wider player base initially it had enough twitch / skill cap to fill the needs of the fast action fps like players, it had enough team play to fill the need for the MOBA/ARTS players and it was close enough in it's concept to pull some players away from the likes of WoWS.
Now with a tiering system, and a system that encourages people to grind or pay it quite likely going to turn out to be a very different beast.
It wasn't unexpected the monetization options so far were pretty d4mn slim, the cosmetics didn't had and couldn't have as much of an impact as they do in ARTS/MOBA/FPS games and it seemed that making money on selling PVE episodic content was also something that was deemed to be insufficient to keep the lights on, or at least bring in the sums of money that the developer and publisher expect.
At the end it's a "no brainer" for Yager/6ft they have had to come with a clear action plan to monetize the game throughout its lifecycle and copying a system that has been proven to work for other types of games is the easiest thing to do and from a corporate stance also the responsible thing to do from a fiduciary point.
But it doesn't mean it's a good system, WoT is one of those games that is very polarized some people loathe it some people can accept it but it all boils down to how they monetize and how they expose progression in the game rather than the gameplay itself.
On the other hand you have games like LoL and DOTA where while some people would not like the gameplay no one can say that the financial model they use is unfair or is build around artificial gating and time sinks.
DN 2.0 is probably the best chance this game currently has of keeping the lights off, but sadly the financial model of it is detrimental to players and is anti consumer, no matter how much lipstick you put on a big it's still a big.
If you are ok with it you most likely would continue to enjoy the game, if you were looking for a high action team based competitive end game well then look else where, most of us will.