The full inscription was already linked to: https://www.britishmuseum.org/collection/object/C_1913-1213-1
Dismissing evidence because you do not read Arabic (perhaps?) is the logical fallacy of Appeal to Ignorance.
I have uploaded a translation of the script above according to my basic knowledge of Arabic, you can clearly make out the name MHMD (written left to right), though l’m uncertain which letter is the D.
Here is the name Muhammad gotten via Google / Wikipedia, the info was easily accessible: مُحَمَّدٌ
By the way, the morphology of the H and M change a lot in Arabic script, even within the same sentence (e.g. on the coin, the first M resembles a seedling sprouting vertically upward, the second M resembles a bud on an horizontal branch - these are one of a handful of ways M is written) but nobody argues against the name MUHAMMAD being on that coin. Nobody.
I’m not going to digest a video to bolster a video [to bolster a video] especially for the same author who is already shown to be a prolific liar / masseuse of truth.
I’ve already countered the information about biographies. Moreover my response could apply to any number of pre-Caxton notables.
Deferring judgement of my omissions = Appeal to Ignorance logical fallacy.
In the passage you quote, we see Tom Holland at it again, focussing only on military triumph, flippantly dismissing Muslims as only worthy of fighting and being fought. In fact, the military conquests were only permitted as defensive wars in Islam, e.g. if preachers were attacked, or Muslims were attacked or allies of Muslims were attacked. Swathes of people converted to Islam because - and this will give Tom Holland a heart attack - they found Islam better than Christianity, theologically.
As for Tom Holland’s other sources, a west Syrian here, a bishop there - he is not going to the source, rather selecting opponent’s writings, especially opponents with vested interests (the Byzantine Church had long ago become a money-making enterprise, with, well, Byzantine over-complex bureaucracy - they didn’t like any new religion to appear, let alone Judaism).
Please give me more arguments. Also: please avoid logical fallacies. Very big list of fallacies here, right in at the deep end but you’ll get the hang of it: List of fallacies - Wikipedia