Religious people see religious behavior even where there is no supernatural god involved. In their eyes, the god of an atheist soccer fan is soccer, and they see much of his behavior as just as religious as theirs.

When you’re a hammer, everything looks like a nail. To the atheist soccer fan, they’re enjoying the sport, but I think it’s a stretch to say they are enjoying it to the extent of “worship” in the same way a Christian does God. Even the most religious people I’ve known were allowed to enjoy things, watch sports, , appreciate good food, etc. and it was fine if they didn’t “put it before God”.

In OP’s case we don’t know if they have any ties to a religion, so I suppose that context is what matters most to answer their question. To me, an atheist, they are not being religious by believing science. To a fundamental Christian, that belief in science could be enough to say they are in service of a false god.