I hate to sound like a radical, but the opinion of the community does
play a role in the meaning of the terminology we use. For example, us
old codgers were taught that E=mc^2 referred to the total energy,
for example, of a moving particle (or the total energy of any massive
system), including a photon. In more recent time it has become
fashionable to say that E is the rest energy of a particle. How that
pertains to a system of particles seems to be a bit muddy in the
minds of modern theorists, but they seldom deal with systems
containing 10^24 particles. Under this new scheme photons, which
undeniably possess energy, are said to be "massless". In the old days
we were asked on exams to calculate the mass of a given energy photon,
and also what its rest mass was. The concept of rest mass (or proper
mass as we called it later) has disappeared, replaced by the simpler
"mass".
Now I didn't get to vote on that change (I would have opposed it, but
you've guessed that), but it happened anyway. I can certainly cope
with the change (they haven't fired me yet), but it has taken place.