My interpretation is that the Epicurean position is that "virtue" is a generic term that applies to the "strengths" or "excellences" or the particular activities of a thing that keep it alive and allow it to flourish.
I appreciate that reference of the “virtue” of a thing is it’s excellence, it’s strengths, it’s will to survive. This reminded me of a song “Lust For Life” with the verse “a lust for life keeps us alive”.
It’s not a great song, but here is how someone on Reddit summed it up.
QuoteAlso, "a lust for life keeps us alive" alludes to a philosophical idea that we continue to live simply bc we want to, that sometimes we don't need anything more to keep going in this crazy world except a desire to live. We keep living out of habit bc the alternative, death and non-existence is a truly foreign idea for us. Idk, I like it.
Living simply is very Epicurean, and with pleasure as our guide that keeps us in touch with our natural desires, to live & to flourish.