This law specifies the legal mechanism for activating the backdoor.

The backdoor will most likely be provided by tools like Pegasus.

Pegasus has nothing to do with backdoors, it uses security vulnerabilities.

Yes, manufacturers have always been bullied by large countries to either build in backdoors for inteligence agencies or be put out of business. This just legalizes existing tech I guess, but that doesn't make it any less bizarre that they decided to put it into plain sight.