Biggles, I have more than 10k names in my tree and I am definitely not a name collector! I am also more than willing to reply and engage with anyone that connects with my tree. I am constantly reviewing and updating, even the best of us make errors sometimes and new data can open up all sorts of can of worms!
That said, I have discovered a newer version of a name collector!
a DNA COLLECTOR!My husband's maternal line is a thorn in my side... dead ends everywhere. DNA isn't really helping much beyond what we already know. I searched my mother in law's name again (as I do regularly) and found that a tree had different maternal grandparents for her, I went to check out the tree (nearly 63K worth of names), the tree owner has done a DNA test and has merrily added DNA match to my MIL's niece... she doesn't match my husband, his sister, or any of the 3 other cousins from this line.! She has put a nice Irish flag avatar against my MIL's mother which is correct as she was born in Ireland but then the tree owner put her birth place as Lancashire with different parents. I have all the certs baptisms, etc., and a wealth of family knowledge to know she didn't originate from Lancashire!
I messaged the tree owner as I thought the DNA connection was very misleading for anyone without FH experience to understand/recognise the mistake! Hardly surprising, no reply and she has been online every day since I messaged her. note, she says she has been researching since 2004!

I am guessing she is trying to match up her DNA matches to anyone in her tree with a similar name irrespective of where they are in the world or checking facts!
I don't normally comment on name collectors as there are a variety of reasons why it happens, I just check what they have in the area of my interest, if it's a load of rubbish, I just ignore the tree.
Rant over, but be wary!

PS... I have also notified the cousin who the tree owner say's she is connected to, hopefully she will check if her name appears in the match list anywhere.