Regardless of whether or not it's a "boilerplate statement," I believe it's inaccurate. I would be interested to see any qualifying documentation and/or research. I see Wadsworth panels on a pretty regular basis - typically with a fuse block for the service disconnect, and either breakers or Edison base fuses for distribution. They appear to be reliable systems for the most part, although their age, and the wiring (commonly tinned copper) will usually warrant repairs or replacement of the system.