The bride has valid reasons to keep her last name, rooted in her professional identity and personal preference. It's unfair for the groom to demand she abandon her identity and career recognition. The groom's inflexibility is sabotaging their wedding and future happiness. He should compromise and respect her wishes, or at least consider her suggestion that he take her name.
The bride is being unreasonable and selfish by refusing to take her fiancé's last name. Marriage is about building a family unit, and sharing a last name symbolizes that unity. Her insistence on keeping her own name suggests she's not fully committed to the marriage. Threatening to cancel the wedding over this issue is manipulative and shows a lack of maturity.
The groom is being controlling and dismissive of the bride's feelings and professional identity. While tradition often dictates the woman takes the man's name, it is an outdated notion that should be re-evaluated in modern relationships. The bride has valid reasons for wanting to keep her name, and the groom should respect her autonomy. However, the bride should have a calm conversation with the groom instead of threatening to call off the wedding.