PE ratio could be corrected as well?

From what I understand, PE ratio is the ratio of price of a single share to the sum of earnings per share of the last four quarters. Since we are saying that some of the big name tech stocks like Google are at some of the lowest numbers, we do have to consider that 2021 had tremendous GDP growth and hence the PE ratios could be inflated. An interesting number to look at would be Price/(4*Q122) ratio as the GDP shrank last quarter. We could end up with similar numbers but it could be an interesting data analysis.