This is largely true. There is an additional new attack vector as well though in that someone who produces multiple blocks in a row can know what a future RANDAO will be, and the more consecutive blocks in a row they produce (or collude with), the more foresight they have. Missing blocks can break this chain. It also means that someone who produces multiple blocks in a row can, in advance, try out different combinations of missing blocks to see what works out best for them in terms of future RANDAO generation.
On the flip side, there are no longer uncle blocks which means block producers who entirely miss their slot don’t get just a 1/16+fees decrease in block reward, they miss the whole block reward plus fees.