No, there are multiple projects and companies that are making good progress toward commercially practical fusion reactors.
Helion Energy has a contract to deliver Microsoft a fusion reactor by 2028. It's only four years away so we don't need to speculate about it. Helion will either deliver or they won't:
MIT's Commonwealth Fusion Systems has started construction of their small scale SPARC reactor. Once that has proven itself they will build a larger scale ARC reactor. They should get to first plasma in 2025:
China are currently building 27 fission reactors, and the construction time is 7 years.
If it takes 7 years to build something that is known and has been done a couple of hundred times before, I think it's safe to say it will take more than 4 years to build something of similar complexity that has never been done before.
No one can generate enough energy with fusion at the moment. Even if Helion could do it today they would need to build a larger reactor and test that too. Then build the one for Microsoft. To do all of this in 4 years is pretty much impossible
The prototype currently under construction is Polaris. It's 25% larger than the previous prototype and they expect it to achieve net electricity production:
If it takes 7 years to build something that is known and has been done a couple of hundred times before, I think it's safe to say it will take more than 4 years to build something of similar complexity that has never been done before.