It’s not enough to do that. There is something more specific required: a specific version of iOS, a specific language, a particular phone, some setting, something in the search/url history etc.
But it clearly doesn’t reproduce across all devices/versions/settings with iOS Safari. Better repro steps needed.
The repro steps are accurate and sufficient on their own -- following the described steps does crash Safari for the reporting user (and many of us). What is missing is the complete device configuration which is distinct from steps (and would probably be overwhelming, in any case).
Tbf the “steps” in the tweet didn’t even specify where in Safari to enter the text (text area, search bar, anywhere). So even absent the relevant config I’d say it’s a pretty lacking bug report in the steps too.
But it clearly doesn’t reproduce across all devices/versions/settings with iOS Safari. Better repro steps needed.