This video will set you free from this myth which has wasted countless hours of trimming antennas for a perfect match and probably killed a few hams falling off ladders doing so.
Correction at 2:36. Should say: "With no SWR the loss is about a half db. So the SWR adds another 1 db." In the video your host reversed those two figures.
Here's some great reading referred to in the video.
https://www.k3emd.com/downloads/Reflect.pdf
https://na0tc.org/lib/exe/fetch.php?media=technical:swr_and_reflected_power.pdf
http://zs6wr.co.za/documents/SWR.pdf
ARRL Antenna Book under "The Conjugate Matching Theorem"