If I had any doubts about if you knew how to use Bomber or not have dissapeared now, it's crystal clear that you don't have the slighest idea of how to use and play Bomber.
Bomber is a close-mid range offesive/support hero that offers a huge arsenal of combos to both destroy and slow down the enemy. It's not easy to learn and it's definitely not easy to use and at first it may not even be appealing for many players, it's not like the rest heroes we have and those reasons are the main thing of why there aren't many people using it. Ergo, it's undeniable that Bomber can be of great use in a team if played correctly, (aka not the way Beli and you proposed).
I have to add that Bomber is definitely not a "Solo class" or a "Capping class", to even consider that in the first place is a huge mistake. Bombers can cap once the enemy team is obliterated, and not many Bombers can achieve so, and even at some point capping is not recommended. Andrea and Pointlessfield are primes examples of how Bomber should be played, they understand it's mechanics and the tactics required to be effective while playing. If you want to see a bad Bomber just join in a random room and behold those Maj. who can barely understand that Q is a toggle ability.
Now, granted, you've seen me... "slide back and forth in the CP. You do the same repetitive movements and you try to shoot enemies while you move from one side of the map to the other." I won't deny it, I do that a lot, but mainly because it's MY way of supporting the team and I only do that under a shitload of conditions if I even consider that I'm needed. You can ask many players how annoying I can really be, lmfat has asked me to stop doing that because I weaken him so much in CP that at points he has to leave his confort zone and hunt me down, ronforge has stated that he hates when Pointlessfield slows him down and neutralizes him to the point he becomes useless, and daeshun just had a heart attack with Andrea's skills in Space Station just 1 hour ago when we were playing "casual". And don't forget, I can change and adapt, and you've only seen me play in Dock I suppose, since you didn't come up with how I play in other maps I assume you think that this is all I know about Bomber, but oh man, you couldn't be more wrong about that.
And last but not least, "at the end of the day" Bomber is a pocket shocker that has a lot of deadly combos capable of taking down most enemies and dissabling most tactics and strategies. But the last thing I expected to see what this:
I don't mean to disrespect, but I've never seen such nonsense. That was one of the most piece of $hitty statements about Bomber's I've seen in years.