I rarely wave nowadays. In fact, I’ve been keeping a personal tally on it and it’s been well over 40 days since I last went for a drive and didn’t see a Tesla. The M4 corridor between Bristol and Cardiff feels like the model 3 must be the most popular selling car in the UK. (I don’t think it even cracked the top 10)
I didn't wave much when I got my car only because I rarely used it during Lockdown One. That month (April 20), the Model 3 was also the UK's best selling car.
During last summer I did wave quite frequently & this was mostly reciprocated at first but then happened less and less. Since then there are so many Model 3s local to me that waving seems rather pointless, one owner charging at Tesco even said he finds it annoying and rather embarrassing.
I don't wave any more unless someone else initiates it. Few people seem to take notice or look at Teslas' now as on almost every journey I see several, including S & X Models.