yes, it's the age old "blame the foreigner" malarkey. I get stupid trolls posting offensive stuff because they think my name defines nationality. Mostly yanks, sad to say. But as a British person with the birthright and DNA to prove who I am, it's just pathetic.
all entries are at the discretion of the IO. But you have options. You're over 50, apply for retirement visa with the relevant paperwork. Apply for a tourist visa, and make sure you have accomodation, money, and a ticket to leave within the permitted time.
if you have the required documents needed you'd be unlikely to be refused. If there was an item they needed they would ask you to send it. Very unlikely to be refused.