They've offered to do so. An offer for all 6 Glazers shares is on the table.
They've also offered an alternative option. Given this offer came at the final stage, it's likely they sensed hesitation from 2 of the 6 and acted swiftly.
Nobody is peddling anything either. Some fans are being more flexible and open-minded over ridding the club of the Glazers control and influence. 2 Glazers with no input, which is what they would have, even if they kept the B status of their shares, Ratcliffes majority would be so significant that they wouldn't be able to influence anything, is better than 6 Glazers with 100% control.
How people don't get this genuinely blows my mind.