Considering the period they’re in…they’re already on the brink of war with the Klingons (again 🙄), the love of his life is dead, and we don’t know how strained the relationship is between Riker and Picard. The hostilities with the Klingons are likely hanging on by a thread, so a retired ambassador with mental and memory problems convinces his ex-wife to divert her starfleet ship under false pretenses into dangerous territory, requiring Riker to take his ship into battle with the Klingons to rescue them, losing her Medical ship in the process. He has every right to be pissed at them.
Maybe the extra nacelle is only used for when they need to travel at maximum warp for extended periods of time. Every 10 hours they spin up the unused nacelle and bring one down for repairs and maintenance and just keep cycling them…
Considering the period they’re in…they’re already on the brink of war with the Klingons (again 🙄), the love of his life is dead, and we don’t know how strained the relationship is between Riker and Picard. The hostilities with the Klingons are likely hanging on by a thread, so a retired ambassador with mental and memory problems convinces his ex-wife to divert her starfleet ship under false pretenses into dangerous territory, requiring Riker to take his ship into battle with the Klingons to rescue them, losing her Medical ship in the process. He has every right to be pissed at them.
Maybe the extra nacelle is only used for when they need to travel at maximum warp for extended periods of time. Every 10 hours they spin up the unused nacelle and bring one down for repairs and maintenance and just keep cycling them…