You are holding HTLCs open on all nodes along the route. HTLCs are a limited resource and those nodes are not being compensated for the use of this resource or for the increased risk of force closures.

You make a valid point that they can change this setting but this brings unrelated externalities. HTLC delta was included in the protocol to allow a grace period for node runners to reconcile failed payments on chain. Your use of this resource for economic purposes muddies the waters. I can understand why routing nodes are upset about this. It externalizes costs to the entire network.

A different design would resolve this conflict. What if both parties could use some sort of bearer asset that represented a potential lightning transaction? This asset could be issued by an always-online service, locked to the recipient, transmitted via any data channel, and redeemed when the recipient comes online, at which time they issue a LN tx to convert it to self-custodied sats. Sort of like a paper claim to some bitcoin. Like physical cash but electronic. Electronic cash! We can workshop the name. But what if it had even better privacy properties than lightning? I think we would really be on to something! What do you think??