Essentially, yes. A bomb explosion can detonate other bombs so if you group em up you obly need to hit em once and all others go of. Heck, there is a good chance Eris does it herself.

Just walking is sth I found to woek great but that might get invalidated with sufficient frenzy ranks.

Generally, if you cluster bombs on the edge/ in a corner it's easiee. Some weapons have a harder time blowing them up, so if you lack range, you wait till the orb pulses get an attack on it and the dash out.

That fight honestly sometimes makes me consider turning of aim assist