The wOBA stat gives weights to BB, 1B, 2B, 3B, HR based on the statistical probability that each event contributes to a run. The weights do change over time, but they remain relatively stable. For example, Walks had about 3% less value from 2018-2022 than they did from 1998-2002. The value of singles changed even less. If you go back to the 1930s, you will see some more meaningful differences.
https://www.fangraphs.com/guts.aspx?type=cn