Yet whenever I have visited a Hinduism temple, I see a statues everywhere in the temples.
In the picture given by you and copied by me above, the priest or the pujari is doing it before a live fire, for which a statue could not be made, perhaps they are doing it in contemporary Hinduism, which might have not been done earlier in he ancient times, if you are right. Right? Please
Regards
Aren't Hindu temples beautiful places? Most likely all the Vedas were written from within the precincts of Hindu temples.
In the case of fire, it works the same way as a murthy. It conducts the energy and is a conduit for prayers just like a murthy is.