You are skipping a crucial variable: Capacitance Factor.
New nuclear power plants come in at 90-95%+, while lower for both solar (10-25%) and wind (22% for onshore and 36% for offshore in 2018). This means that 1GW of nuclear power will, on average, result in 0,9-0,95GW of grid capacity, while 1GW of offshore wind will result in 1/3rd of that.
So if we use your example with Hornsea 2 (I haven't checked your data, but choose to believe you), Hornsea 2 is 50% more expensive than nuclear power, with out factoring in the cost of large scale energy storage. Ask any honest person in the battery industry – I have done that, because I wanted to know whether or not it was an option – and she will clearly tell you, that they will not even be able to meet the anywhere close to 10% of EU or US storage needs in 2050, while also supplying batteries to EVs and other needs.
Those windmills have an operating life of 15-20 years. Once again, we need to triple or quadruple the cost, to keep that capacity on the grid for an equal amount of time. The same goes for whichever storage solution you choose – batteries for example.
Newer battery technology might change that, but that is a very schizophrenic approach that I see in far too many people, who put their politics first: The environmental challenges are enormous, present and must be solved fast... just not with that specific type of technology, but rather one that we haven't invented yet. I find this close to disqualifying.
Safe modern reactors are built; look at the South Korean project in UAE. SMR's are a relative new field, they have already come very far, which is surprising for many, since government support of this research is close to none, compared to money spent on other green energy projects (even the foolish ones, such as wave energy).
Nuclear is stable and delivers energy 24/7. When the requirement is for stable energy with a high total EROEI, nuclear is a great technology. If one thinks of the environmental situation as a crisis, one should want to act now. Nuclear can be rolled out now and a wide rollout would make the industry do all those things, you think it is lacking. Because not enough is being done now and if it was a purely economic discussion (including proper safety, storage of spent fuel until it can be used, etc. – not cutting corners!), nuclear would already be the major power source in he world. But feelings go above facts, which is hurting science, humanity and the planet.