They probably are, but all you see is what happens on the pitch and what you think happens on the training pitch. That whole kicking a ball around and training line is not even 10% of what you see.
Think how many thousand of kids every year, at clubs all over the world try an make it as a footballer. Think of all the hours of training, the missing doing normal shit with your mates after school because you have to train or travel to a match. A lot of them either convince themselves or train so hard they think they'll make it, so a lot of them don't do as well at school because of the lifestyle. Then they get dumped. Told you aren't good enough, sorry. They have nothing to fall back on, no plan B. How many times do you read about people who have gone off the rails who were talented footballers as kids?
To make it to the very top there are years and years of sacrifices that we take for granted. You can't have a night out without being interrupted all night. No swift pint after work. It may make it easier to meet women (probably way out your league too), but you hardly see them. Travel to away games, internationals, training camps etc. You and your kids sacrifice those special moments like first words or school plays because you are in the arse end of nowhere for a World Cup qualifier against a bunch of part timers. You can't drink excessively (if at all), you have to have specific diets etc. It's also a short career, maybe 15 years. Then what are you qualified for? What do you do with your life to fill the void left by football? You may have money, but that can make it worse. Keith Gillespie had loads of money but also tons of free time after football so filled it with Gambling. Just because you are rich doesn't make societal or mental issues go away, it changes the dynamic obviously, but they still exist. With some of the players from poorer countries they essentially have to bankroll all their friends and family too, hence some of the huge entourages that appear. Not because they probably want to, but because it's the only way to keep them in a somewhat comfortable life.
So yeah, I'd say they deserve what they can get. For the most part they are a bunch of working class kids who did good, sacrificed huge chunks of childhood and as adults sacrifice even more things we take for granted and for which there is a small window of time to make money to set themselves and their families up for life. In a world where Jeff Bezos makes billions exploiting working class people to work for minimum wage and forcing them to piss in bottles, it's good to see some of them take their slice of a very lucrative pie. Wages are a cost of doing business and the Premier League does very fucking good business based on the talents and sacrifices of those 20 squads of players.