In many respects the process does mirror the reality in the industry sadly.
Applying for agents - the vast majority of the time your application is ignored. If you get a 'no thanks' that is actually a good result as you can cross that one off the list.
Auditions - the self tape goes off into the ether and you write it off three weeks later or when you hear other people have been recalled/cast. Feedback or even a 'no' is vanishingly rare.
In general if it's not positive news, there will be no news.
Looking back over years and years of auditions, there's also a good 15% or so of productions that never get as far as the film set.
Theatre/MT you do at least have an outcome more often than not but I have known casting take in well in excess of a month to finally give you a no after multiple rounds to get to final 2.
Even if you are cast, until you step out on stage on opening night, or see yourself on the screen, every role is uncertain. I've seen people cast and then replaced mid-rehearsals. Contracts signed for film and then replaced. Weeks of filming as 'younger version of' only to find they decide to ditch the older version and so you're on the cutting room floor too. Weeks of filming to find your scenes are cut to nothing and there's nothing to make a decent showreel from even if you do have a shiny new credit on IMDb....
With so many people wanting to be in the industry, even agents and CDs who would like to be more personal or respond to things just give up because there isn't the time or the man power.
Some agencies are getting 200+ rep requests a week... if they spent 10 minutes on each one, reading the letter, watching the show reels, that would take over 4 days a week with 8 hours spent on that task.
Ditto for castings where they might get 10k applications for a single role.