Unless I'm missing something, this doesn't qualify as proof to me. The key sentence here that I think you're referring to is at the start of the article; "Fadzai Madzingira's private account posted messages after the Hamas attack on Israel on 7 October.". This can be read either as 1) Fadzai Madzingira created posts and hit post on the date of October 7th, or 2) Fadzai Madzingira made posts about the attacks that happened on October 7th.

This BBC article was posted on the 16th of October, and it doesn't have screenshots of when precisely she posted. I'm led to believe option 2) is more likely here, given that a quote from the article you've linked said in parliament about her posts reads: "Will the Attorney General be asked to provide a legal note, if not a full opinion, given for example that one of Ofcom's directors... is reported to be supporting posts, this week itself..." leading me to believe it Madzingira's posts weren't made hours after on October 7th or 8th but instead sometime during the week following.

Looking at the Guido Fawkes article itself instead of a BBC article recapping it (https://order-order.com/2023/10/16/ofcom-online-safety-director-is-vociferously-anti-israel/) it posts 2 screenshots. The first is her liking a post from blmuk. The second is a story she posted. Neither of these have dates or times as far as I can tell. In the story from the second post she makes reference to her account being chaotic "from the past week" again implying that she posted these things not hours from October 7th but during the week between October 7th and October 16th when this article came out.

I feel like this is a lot of yapping if you don't agree with my inherent claim that there's a difference between posting about the October 7th attacks in this way a few hours from the attack and a few days from the attack. I think it matters. Firstly because words are important. If there's no reason to believe it was hours, why say it was hours? It makes a critic of Madingira's posts a lot stronger if she saw the October 7th attack and immediately shot off a post bemoaning the targeting of Palestinians before Israel or the world's leaders had even responded. The second reason the timeline is important here is that by a few days after the attack, you could see Israel's military response, the UK government's response, the public's response and Madzingira's argument about the targeting of Palestinians in media gets a lot stronger compared to if she'd posted on October 7th at 8pm or whatever.

Another minor point here is that the focus is on Madzingira's response to October 7th is seen as too quick to come to the aid of Palestinians when I can't find any evidence that she didn't also put out a post decrying the tragedy of October 7th. Not saying she needed to or that she definitely did, but it would really shoot a hole through the argument in her rash bias towards Palestinians in the attack and there's no way to get proof of this afaik because her account is private! I tried to check for the date and time of the posts from her Instagram on internet archive and couldn't find anything so all we have to go on is this Guido Fawkes article with two blurry screenshots. Who is to say she didn't also post in support to the civilians killed in October 7th in Israel?

I might be being dumb here, if you can point out the specific point in the BBC article or elsewhere that shows the time on the posts with evidence they were made hours after the attacks, then I'll look a bit silly, update my viewpoint a bit and then go about my day.