People are unhappy that they can buy scope for very little money (compared to what it used to be) that can be hacked to full specs.
And also feel a need to insult people who are making it.....
There are many wrong statements here used by those unhappy people.
Making a secure scope (OS, device, whatever) takes effort.
If you just take Linux distro and load it to a scope (like they did) it will not be secure.
So it's not that they are stupid, they are not, and being a rather big company by now, they could have hired ANY security consultant for anywhere in the world if they didn't have a staff on board.
Securing things is expensive and not only once, but whole platform needs to be maintained in different workflow once you go that route.
Also they know that even top notch protection is breakable once there is enough will to spend time on it.
So they make it such that you have some basic licensing mechanism and that's it. Companies will buy legal options (they are exposed to all kinds of auditing, liability and traceability) and hobbyists will buy it for hackability and unlock it. It generates sales.
It is not that they are stupid, or don't know how to do it. Or they do this as some elaborate plan. They simply didn't want to spend more money to develop something that will generate less sales later.
Option bundle for RTB2000 costs € 1,190.- net (no VAT).
You can buy MSO5074 + Logic probe for that money and unlock all features.
For a hobbyist no need to think much...