How about some perspective.
2 years ago, Bourne was treated like s**t by Fat Matt because Bourne had actually played in a Shanahan Outside Zone system and told Fatt Matt that he was doing it wrong,. Patricia refused to listen and doghoused Bourne. Despite being Doghoused, Bourne was still on his way to 800 yards before he tore his ACL.
Last year, he was coming back from the torn ACL and had to put up with the crappy coaching.
2017 - QB Merry-go-round with Garoppolo, Berthard, Hoyer. Rookie Year. 5th WR in terms of targets.
2018 - Bourne led ALL 49ers WRs in Yardage, Targets and receptions despite not being the #1 WR.
2019 - 3rd behind Deebo Samuel and Emmanuel Sanders
2020 - #2 behind Aiyuk in Receptions.
2022 - Mac Jones Rookie Year.
BTW, the 49ers have their really awesome TE by the name of George Kittle. He's been a top receiver for them and led them in target numerous times. Like in 2018 & 2019.
Bourne has the ability to be a solid #2/#3 receiver. No one is saying he's going to put up 1600 yards. But when you watch the offense when he's on the field, it takes on another level. Even last year when they weren't playing him much.