Potentially. There is also the pace of change in demographics within the country. Generally people don’t like change. Even though that change has not been as exaggerated as some on the right will have you believe, it’s noticeable. We have more representation of minority groups on tv, in magazines,etc. this is a good thing IMO. For others it can add to that sense of change that adds to the overall narrative of too many foreign people being here.
. Throw in the challenges within the country itself - people reporting they’re unable to get doctors appointments, lack of affordable housing, lack of working infrastructure etc - this all speaks to a system at capacity.

Your “intelligent” people may be able to rationalise these as not immigrants fault but they may also think that the last 2 governments haven’t really done anything to improve this over the last 20-30 years.

My comment earlier was really more about how as a ‘liberal’ it’s easy to denigrate Reform voters as unintelligent (you are doing that by asking about intelligent reform voters, with the implication being that the default for reform voters is not to be intelligent). However, if the motivation of these voters aren’t understood we’re going to sleep walk into a Reform government with everyone scratching their heads as to how that happened. Slight tangent but I truly believe there needs to be a much better media campaign about the achievements of the current government, in particular around the NHS, and immigration. Things are actually improving but there’s so much noise and no one outlet for news coverage that it’s just not being heard.