Don't vouch for what the rest of the world thinks.
10 years ago, the production of local talent was much lower than it is now.
As for the foreign players, they were no better than those of today.
I would be very curious if you would list me the names of these foreign players (except those who only played during the lockout) whose departure would have weakened the championship.
There are too many poor teams now, Finnish clubs can’t afford to keep the best players etc. the quality of league has gone down clearly ever since Jokerit left and was downhill even before.
The sheer amount of players who are absolutely top of the crop in Liiga and then flop in Europe’s other leagues and return back to dominating Liiga tells you that loud and clear, just look at these players from last season who were at the top of the Liiga scoring:
Wennström SHL: 0,34 Liiga: 0,79 KHL: 0,1
Robin Press SHL: 0,25 Liiga: 0,80 KHL: 0,33
Nicolai Meyer SHL: 0,33 Liiga: 0,80
Robert Rooba Liiga: 0,70 KHL: 0,20
Ahti Oksanen: Liiga: 0,90 Czech Extra: 0,36
Cody Kunyk: Liiga: 0,80 KHL: 0,33
If you absolutely dominate Liiga and fail to be even 0,5ppg in Czech extraligue tells you that the Liiga isn’t a top league.
It’s like the sixth best league in the world at best.