I tried to get something from that link but the abstract is too broad. Can you quote anything from the paper that could help someone understand without reading the whole thing?
I think the "time bomb" is in this sentence: "... some viral infections have been linked to an increased risk for the development of PD ..." with the context that we've all just been through a global pandemic.
Most people get viral infections from coronaviruses almost every year. A lot of commons colds are caused by coronaviruses.
I don't follow why the specific Coronavirus that causes COVID-19 would be different on this regard.
Political expediency, a lesser-known trait of common viruses.