If this software was using Rust, it would be much harder to break them than is currently the case.
And tbh, I have to concur (somewhat). I have lost little-to-nothing due to software exploits, but have gained significantly. For example, reading epubs with my kindle or loading homebrew on game consoles.
You should do good things consistently, not bad things to offset worse things. If DRM is a serious problem in your life, put your money and time where your opinions are and avoid hardware and software products that enforce it rather than mandating insecurity for everyone else.
The Kindle was already 8 years old when I got it, isn't it better to re-use it with more current software? The same with router hardware that gets exploited to flash OpenWRT.
It's very hard to get a modern Smartphone (with acceptable cameras, battery life, performance and software availability) with manufacturer-intended root access.
While I agree that people should adopt Rust (and other approaches) for their security porperties, it's not hard to see how it may lead to exploits getting rarer and to more categories of devices & content that can't be reasonably used in a "free" way, even if not intended by the manufacturer. Thus making it much harder to have control over the devices you own (without becoming some kind of luddite).
That being said: I don't think the world is necessarily a worse place if (1) everybody's devices are more secure, and (2) consumers are a whole are disincentivized from buying into ecosystems that fundamentally don't respect their rights. At the risk of sounding like the luddite you mentioned: maybe we really could use a little separation between technology and literally every other domain of our lives.
The metaphor I like to use is "giving them better nooses to put around our necks."
...and I suppose you could argue that neither do guns kill people...?
Unfortunately for computer security this has been a wild west.
The same security flaw that lets you jailbreak a phone could also allow a hostile entity to say "we don't need you to unlock your phone/laptop, we'll just seize it and break into it using known security vulnerabilities".
Buy devices that you control. Don't try to make other people's devices less secure because you want to break into your own.