I think being zen is important for dealing with interpersonal situations however I think it is a mistake to be too accepting of the status quo when it comes to getting things done. Your time is valuable.

What has worked for me in the past is to find people that are able to force changes to the product (typically project or product managers, or someone else that represents the client) and find out what they need, then focus on producing something for them that gets them further down the path they are taking the product or company. These can be small things or big things, if you can help them create progress then you have a valuable advocate moving forward.

If there is no way to do that within the current engineering processes at your company then consider working outside those processes, and if that is not possible then you should look for opportunities at other organizations.

Culture comes from the top. That culture is busted. The fact you can spot problems and solutions plus you care enough to try is a big indicator you're far better off in a culture that will utilize your mindset much better.

Forcing changes in already messed culture may backfire. You need to take the confidence of key peoples in the team before 'forcing'.