Unfortunately you can complain but they won't care, they usually don't care so why would they care now? All they care is when you report bugs but as for functions, if they are convinced that this is the right thing to do, no one else could convince them otherwise.... unfortunately.....
I agree with you 100% all these updates are irresponsible. I remember 4-5 years ago, an update used to come out every 3-5 months or so, these days they seem to come every 1-2 weeks... UPDATE MANIA! :)))) This makes me wonder, is WordPress a huge giant BUG that endlessly needs fixing and updates??? :)) Really odd....
Indeed all these updates can destroy compatibly with older themes & plugins, many of which are PREMIUM and people paid with money but no longer have any compatibility updates from their developers.
When an update comes out, I'm always hesitant to make the update. First I study the changelog to see if it can HARM my site instead of "fixing" it.
Now, here's a way you can DISABLE all these pesky WordPress updates. Add ONE of the codes from below, minor OR full, not both, lol
Go go wp-config.php and add this code if you want a FULL DISABLE:
define( 'WP_AUTO_UPDATE_CORE', false );
Go go wp-config.php and add this code if you want a MINOR DISABLE:
define( 'WP_AUTO_UPDATE_CORE', minor );
Minor Disable is when a new update like WP 3.8.2 or 3.8.3 is live, your WP website will update automatically, but when a new full version like WP 3.9 is released, you will have to install it manually.
Full Disable disables all WP updates (just WP, plugins not included) from performing automatically.
If you don't know where to add the code in wp-config.php... just add it below this line: define('WPLANG', '');