It ain't THAT far fetched: "The assay uses a fluorescent reporter virus derived from the USA_WA1/​2020" quoted from:

https://www.fda.gov/media/144413/download

There are various mentions of bioluminescence and fluorescence in connection to both the test and vaccine. While I have found no conclusive 'smoking gun' evidence, the fact this shit is being discussed (if not pursued) is suspicious:

https://www.uab.edu/reporter/research/discoveries-innovations/item/9146-glow-in-the-dark-coronavirus-testing-is-focus-of-uab-research-project

https://www.expertinstitute.com/resources/insights/pfizer-regeneron-face-infringement-suits-over-covid-19-vaccine-technology/

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7361141/

https://pubmed.ncbi.nlm.nih.gov/6168915/

Perhaps the screwball skeptics and devout doubters might investigate the subject a bit more, prior to proffering groundless opinions (or juvenile derision) based on what....a whole lot of nothing?