Azithromycin (rhinovirus, influenza A, Zika), clarithromycin (influenza A, rhinovirus), doxycycline (dengue, Zika), minocycline (West Nile), teicoplanin/dalbavancin (Ebola, MERS/SARS-CoV and SARS-CoV-2), rifampin/rifamycins (orthopoxviruses), aminoglycosides (HSV-2, influenza A, Zika), salinomycin/monensin (influenza A/B, coronaviruses incl. SARS-CoV-2), nanchangmycin (Zika, West Nile, dengue, chikungunya), nitroxoline (mpox), and some fluoroquinolones have all shown antiviral properties.
I think they used “generally” on purpose, to make a general observation. Of course, there exist viral infections that are worse than the most common bacterial ones.
There’s some ambiguity in their comment because it isn’t obvious what we’re sort of… averaging over, but I think they clearly don’t mean that there no serious viral infections exist.
And no, strep throat is not worse than ebola.