The sodding suffragettes were even more reviled than the over-70s are now, partly because they advocated violence and mayhem to persuade the country to agree to their demands. The suffragISTS, on the other hand, eschewed violence - but were still reviled.
To many men, any woman who wanted a vote was a traitor to her sex, possible a lesbian, and should be locked in her kitchen and made to stick to her housework, cooking, looking after the ten-plus children (one a year) and making sure that her husband was comfortable in his armchair and satisfied in his bed.
It suits those in power (and those who would like to have power) to have part of the country at loggerheads with other parts. As others have said, it starts now with the over-70s. Next it will be pregnant women, well-known to think less logically than the un-pregnant, so first in line to be denied any input into important decisions. Naturally following them will be menstruating women - another legendary source of illogocal thinking and hysteria. The argument to ban all women automatically wouldn't be far behind - it would save having to test all the female electorate for hormone levels before allowing them through the polling station door.
Gender equality must be considered, though - if women are banned, then of course men must be too.