Considering that the first mentions of cricket were found in England, your theory could be quite credible. However, tea is not drunk everywhere these days, with some sticking to water. Personally, I use the
tea break time in test cricket to rest a bit and drink green tea or an energy drink, which I find more effective and tastier than Earl Grey tea. Although my teammates disagree, they are fans of different types of tea and often discuss it during the break.