First, i agree that everyone has an opinion and beliefs so hope I don't offend anyone here with my thoughts.
Like many male leads, I still define LSC's actions as abusive because of the con/precepts of consent, respect and decency which are vastly complicated and dynamic because of the individualistic nature of one's opinion and perception of each to one's own or other's context of circumstances. Also, there is such a spectrum to abuse as well as a spectrum to the degree of harm being dependent on the recipient/victim's resilience. have ever had your concent violated, your intentions miscontrued, your bodily personal space invaded, and/or your rights suppressed can one understand how distasteful it is to read how commonly these plot events are in many c-novels (of many genres/settings) where the author glosses over a large part of the harm or foulness of such behaviour, to the point that some readers could/may become desensitized.
Although this is fiction, our critical thinking of literature (or sometimes lack thereof) also influences our perspective of real life. If reading such an incidents doesn't make you feel or consider it abuse, then how would witnessing or experiencing it be then defined as abuse? Such thoughts on literature can lead us to our attitudes or values, whether condoning what is 'normal'/acceptable or admonishing what is abuse. Each person in the circumstance/s would have to make their own opinion and decisions, including about forgiveness, sincerity, remorse, rehabilitation, or redemption.
I have read advanced Patreon chapters and 278-282 have me completely appalled with LSC's behaviour and temper... Not unforgivable but deeply disappointing and unnerving to be that forceful towards his 'dearest' and such hot blind anger like that could be a commonality for various assault/homicide commited 'in the heat of the moment' where regrets cannot be cured .... So far SQC's reaction to LSC in 279-282 isn't surprising and could have been more drastic so will have to wait and see whether i keep reading/supporting this melodramatic novel.
P.S. i enjoy your, QueenCL and Peng Peng's spoilers/comments so it's no judgment on your opinion or preferences, just a painful discussion topic given the current hot-topic of consent - there was even a sexual assault acquittal in Ireland because the defence was able to argue a young lady wearing a sexy, lacy thong underwear constituted consent (f**k that noise, articles of clothing are not a representation of a person's absolute mind nor a speaking voice). Global laws differ around consent but if a cultural shift can happen through common knowledge, attitudes and respect then it can go a long way towards reducing people abusing someone else, stepping on someone's dignity, or taking advantage of someone.