Arbitrage trading is likely rare these days. You get to compare the rates of exchanges, locally and internationally and you're lucky enough if you get to see the opportunity with it.
Newbies are probably the ones who think that arbitrage trading is still a thing until now because they haven't experienced how it became an easy source of money back then but eventually fizzled out. Nowadays, with a price difference of only a few cents, it is impractical to get into such trading. The fees itself might even be enough to kill potential profit. And knowing how volatile the crypto market is, the moment the tokens arrive the price might already have moved significantly.