[adeledeweylopez]

It seems like they address this issue as well:

"Another key advantage is that most of the solid blanket materials used to surround the fusion chamber in such reactors are replaced by a liquid material that can easily be circulated and replaced, eliminating the need for costly replacement procedures as the materials degrade over time. "It's an extremely harsh environment for [solid] materials," Whyte says, so replacing those materials with a liquid could be a major advantage."

[iaw]

It's been half a decade since I studied anything fusion related but IIRC regardless of using a liquid blanket you still have to have the machinery (powerful microwaves, particle injectors, etc) and the inner wall present.

Liquid breeder blankets are definitely the way to go but I don't think they are the full solution. (They are super neat because you can use them to make more fuel for fusion through neutron capture, so not only do you reduce radioactivity but you also reuse the energy in a useful fashion)