A helium-resistant material could finally usher in the age of nuclear fusion

Perhaps more specifically, alpha radiation resistant. Alpha radiation is helium nuclei.

I find it very hard to believe in anything published originally by Futurism... can someone with more background on the topic comment if it's trustworthy stuff?

Even if true, and feasible, this does noting for spalling from fast neutrons, and half a dozen major bottlenecks with no daylight in sight. Helium impregnation is hardly the major hurdle, at least, not compared to atomic spalling, the breeder blanket, diverter design, magnetic containment, etc...